TW201118476A - VA type liquid crystal display device - Google Patents

Abstract

The present invention relates to a VA type liquid crystal display device, in which the said VA type liquid crystal display device comprises fornt side polarizer (14), rear side polarizer (12), VA type liquid crystal cell (LC) disposed between the above-mentioned front side polarizer and rear side polarizer, and first phase difference area (16) consisting of one or more than two layers of phase diffecence layer between the above-mentioned rear side polarizer and the above-mentioned VA type liquid crystal cell. The said first phase difference area satisfies the following formulas: 0 nm ≤ Re(590) ≤ 10 nm, and |Rth(590)| ≤ 25 nm In the formulas, Re(λ) indicates in-plane retardation value (nm) in the wave of λ nm; and Rth(λ) indicates retardation value (nm) of thickness direction in the wave of λ nm.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VA (Vertically Aligned) liquid crystal display device in which front contrast is improved. [Prior Art] In recent years, high contrast (CR) of liquid crystal display devices is progressing. In particular, compared with other modes, the VA liquid crystal display device has the advantage of high CR in the normal direction (hereinafter referred to as "front CR"), and various developments to further improve its advantages. It is continuing. As a result, in the past six years, the front CR of the VA liquid crystal display device has been increased by about 20 times from about 4 〇 to about 8,000. On the other hand, in the liquid crystal display device, it is important that the front surface CR is high and the CR in the oblique direction (hereinafter referred to as "viewing angle CR") is high. Various proposals have been made for a VA type liquid crystal display device. A retardation film is used as a technique for reducing light leakage caused by an oblique direction in black display (for example, JP-A-2006-184640). In general, the liquid crystal cell is centered, and a retardation film is disposed on the front side and the rear side, respectively, and the two phase retardation films share the phase difference necessary for optical compensation to achieve optical compensation. Two methods are generally used in the combination of optical compensation. One of the methods is to share the phase difference evenly on the retardation film disposed on the front side and the rear side, and there is only one advantage in that the film to be used can be used. Another way is to share a larger phase difference on the phase difference film disposed on one side, which is advantageous in terms of cost from the combination with an inexpensive film and optical compensation. 4 - 201118476 The above is the practical use of the phase difference film arranged on the rear side to share a larger phase difference. The reason for this is the manufacturing cost. In the column [0265] of JP-A-2006-241293, "the cellulose of the present invention is used only on the protective film of the one side polarizing plate (between the liquid crystal cell and the polarizing film). In the case of a film, it may be either one of the upper polarizing plate (observation side) and the lower polarizing plate (backlight side), and there is no problem in function. However, since it is used as the upper polarizing plate, it is on the observation side. (The upper side) is necessary for providing a functional film, and there is a possibility that the productivity is lowered. Therefore, it is generally considered that the case where the lower polarizing plate is used is relatively high, and it is considered to be a preferred embodiment. The second reason is that a film having a large phase difference is disposed on the rear side, and it is preferable from the viewpoint of environmental resistance such as impact resistance, temperature change, and humidity change. Heretofore, there has been no review of the optical characteristics of the retardation film (retardation film) used for improving the viewing angle comparison as described above and the relationship with the front CR. SUMMARY OF THE INVENTION In the case of a liquid crystal display device having a high CR, it is difficult to achieve a higher level of contrast based on the method proposed for reducing the CR factor. As a result of the intensive review, the present inventors have found that in the case of the VA liquid crystal display device, the retardation of the retardation layer existing between the rear side polarizer and the liquid crystal cell is not considered to affect the front surface CR. It is one of the reasons for the decrease in the frontal CR. The present invention has been made in an effort to provide a VA type liquid crystal display device having a high front contrast. 201118476 The means for solving the above problems are as follows. [1] A VA liquid crystal display device comprising a front side polarizer, a rear side polarizer, a VA type liquid crystal cell disposed between the front side polarizer and a rear side polarizer, and a polarized light on the rear side The first phase difference region composed of one or two or more retardation layers between the VA type liquid crystal cell and the first phase difference region satisfies the following formula: Ο nm ^ R e (5 9 0 ) ^ 10nm, and |Rth(590)| ^ 2 5 nm where Re (λ) means the in-plane hysteresis nm(nm) at the wavelength λ nm, and Rth(;l) means the thickness at the wavelength ληιτι The delay of the direction 値 (nm). [2] [1] VA type liquid crystal display device in which the VA type liquid crystal cell system has a front substrate and a rear substrate] and a ratio (CRf) of the front substrate (CRf) is opposite to the rear side The component contrast (CRr) of the substrate is 3 or more. [3] The VA liquid crystal display device according to [1] or [2], wherein the front side polarizer and the VA type liquid crystal cell have a second phase composed of one or two or more retardation layers. The difference domain, and the second phase difference domain satisfies the following formula: 3 0 nm ^ Re (5 9 0) ^ 90 nm, and 1 70 nm = Rth (5 9 Ο) ^ 3 Ο Ο nm 〇 [4] In the VA liquid crystal display device of [3], the first and second phase difference regions satisfy the following formula:

And(590)-70 ^ R th ι ( 5 9 0 ) + R th 2 ( 5 9 Ο ) ^ Δηά(590)- 1 Ο 201118476 where d is the thickness of the liquid crystal layer of the aforementioned VA type liquid crystal cell (nm ) Δη( λ) is the wavelength of the liquid crystal layer of the VA type liquid crystal cell; the refractive index anisotropy of I; AndU) means the product of AnU} and d; RthiU) means the aforementioned The hysteresis nm (nm) in the thickness direction of the phase difference region and Rth2 ( λ ) mean the hysteresis nm (nm) in the thickness direction of the second phase difference region of the wavelength; I. [5] The VA liquid crystal display device according to any one of [1] to [4] wherein the first phase difference field is composed of a deuterated cellulose film or a deuterated cellulose film. [6] The VA liquid crystal display device according to [5], wherein the deuterated cellulose-based film contains at least one type of hysteresis 値Rth in the thickness direction within a range satisfying the following formulas (I) and (II) Compound, (I) (Rth[A]-Rth[0])/A each -1.0 (II) 0.0 1 ^ A ^ 30 (Rth[A]: Rth of a film containing A% of a compound which lowers Rth (nm) 'Rth[0]: Rth(nm)' of the film of the compound which lowers Rth and A: the mass (%) of the compound when the mass of the film raw material polymer is 10 。. [7] The VA type liquid crystal display device of [5] or [6], wherein the deuterated cellulose-based film is in a deuterated cellulose having a thiol substitution degree of 2.85 to 3.00 relative to the deuterated fiber. The solid content contains 0.0^30 mass. /. At least one compound which reduces the in-plane retardation 値Re and the retardation in the thickness direction 値Rth. [8] The Va type liquid crystal display device according to any one of [5] to [7], wherein the aforementioned deuterated cellulose-based film has a mass of 0·01 to 30 with respect to the solid content of the deuterated cellulose. . /. At least one compound which lowers |Re(400}-Re(7〇〇)| and |Rth(400)-Rth(700)| of the film. [9] As in [1] [8] In the VA liquid crystal display device, the first phase difference region is composed of an acrylic polymer film or an acrylic polymer film. [1] The VA liquid crystal display device according to [9], wherein the first The i phase difference field is composed of an acrylic polymer film containing at least one acrylic polymer having a unit selected from a lactone ring unit, a maleic anhydride unit, and a glutaric anhydride unit, or has the acrylic system. The VA type liquid crystal display device according to any one of [3] to [10] wherein the second phase difference field is composed of a deuterated cellulose film or contains deuterated cellulose. [12] The VA liquid crystal display device according to any one of [3], wherein the second phase difference region is composed of a cyclic olefin polymer film or a cyclic olefin system. [1] The VA type liquid crystal display device of any one of [1, [1, 2], wherein the front contrast is 150 [I4] The VA type liquid crystal display device according to any one of [1] to [13], which is a backlight unit that sequentially emits light of three primary colors independently, and is driven by a Field Sequential. According to the present invention, it is possible to provide a VA type 201118476 liquid crystal display device having a high front contrast. [Embodiment] The present invention will be described in detail below with reference to the present invention. The range of numbers indicated by "~" means the range of the number 値 before and after the "~" is used as the range of the lower limit 値 and the upper limit 》. First, the terms used in this specification are explained.値, Re, and Rth) In the present specification, ReU) and Rth(;l) each indicate an in-plane hysteresis nm (nm) of the wavelength λ and a hysteresis 値 (nm) in the thickness direction. Re(;l) is measured by injecting light having a wavelength of λ nm into the normal direction of the film in KOBRA 21ADH or W R (manufactured by Oji Scientific Instruments Co., Ltd.). The standard wavelength of KOBRA is 590 nm. In the case where the sample such as the film to be measured is represented by a refractive index ellipsoid of one axis or two axes, Rth(λ) is calculated by the following method.

RthU) is the above-mentioned ReU) as the tilt axis (rotation axis) for the in-plane slow axis (determined according to KOBRA 21ADH or WR) (the case where there is no slow phase axis is the rotation axis in any direction in the film plane) The normal direction of the film, from the normal direction to a single side of 50 degrees at a pitch of 10 degrees, from the direction of each of the tilts, the light of the wavelength λ nm is incident and all of the total measurement is 6 points, and according to the measured hysteresis The assumption of the average refractive index and the film thickness of the input film are calculated to calculate KOBRA 21ADH or WR. In the above, in the case of the film 201118476 in which the in-plane slow axis from the normal direction is regarded as the rotation axis and the direction of the hysteresis 某 is zero in a certain inclination angle, the inclination angle is larger than the inclination angle. After the hysteresis is changed, the sign is negative, and the KOBRA 21ADH or WR» is calculated. In addition, the slow axis is regarded as the tilt axis (rotation axis) (in the case where there is no slow phase axis, it is regarded as the rotation axis in any direction in the film plane) and The hysteresis 测定 is measured from the two directions of the arbitrary inclination, and according to the assumption of the 値 and the average refractive index and the input film thickness 値, Rth can also be calculated from the following formula (X) and formula (XI). Formula (X) • ny X n2 d

Lysin(sin -ΐ(ϋί1^2) + (nz cos(sin ))2 cos {sin J)) *\( nx nx nx (X I )

Rth = { (nx + ny) /2 — nz} Xd Note = The above R e ( 0 ) indicates the hysteresis 値 from the normal direction in the direction of the tilt angle Θ. Further, in the formula, nx represents a refractive index in the in-plane axis direction, ny represents a refractive index orthogonal to the nx direction in the plane, and nz represents a refractive index orthogonal to the nx and ny directions. . d is a film thickness. In the case where the film to be measured cannot be represented by a one-axis or two-axis refractive index ellipsoid, a film having no optical axis (optic axis) is calculated by the following method. .

Rth(;l) is the above-mentioned Re(A) for the in-plane retardation axis (determined according to KOBRA 2 1AD Η or WR) as the film normal direction of the tilt axis (rotation axis) 'from -50 degrees to + At 50 degrees, the light of the wavelength λ nm is incident from the direction of the inclination at 10 degrees, and the point 1 is measured. According to the hysteresis 値 and the average refractive index of the measured 値 and the input film thickness 値, the KOBRA -10 is calculated. - .201118476 21ADH or WR. In the above measurement, the assumption of the average refractive index is the use of a polymer manual (JOHN WILEY & SONS, INC), a catalogue of various optical films. The enthalpy of the average refractive index is unknown, and can be measured by an Abbe refractometer. The enthalpy of the average refractive index of the main optical films is as follows: deuterated cellulose (1.48), cycloolefin polymer (1.52), polycarbonate (1.59), polymethyl methacrylate (1.49), polystyrene (1.59). Nx, ny, and nz are calculated by KOBRA 21ADH or WR by inputting the assumption of the average refractive index and the film thickness. Further, Nz = (nx - nz) / (nx - ny) is calculated based on the calculated nx, ny, and nz. In the present specification, the "late phase axis" of a retardation film or the like means a direction in which the refractive index is the largest. Further, the term "visible light region" means 380 nm to 780 nm. Further, in the present specification, the measurement wavelength is 590 nm in the case where there is no special note on the measurement wavelength. The wavelength of 590 nm is a wavelength generally used in the management of the physical properties of the film in the art to which the present invention pertains. In the present specification, the phase difference, the retardation film, the liquid crystal layer, and the like indicate the number, the number range, and the qualitative performance (for example, "equivalent", "equal", etc.) of the optical characteristics of each member. It is to be construed as indicating that the liquid crystal display device and the components used therein contain a numerical range, a number range, and a property which are generally acceptable. In the present specification, the term "relativity film" means a self-supporting film disposed between a liquid crystal cell and a polarizer (regardless of the size of the hysteresis )). Further, the retardation film is synonymous with the retardation film. Phase difference [S } -11- 201118476 The term is a general term for a phase difference film of one or more layers disposed between a liquid crystal cell and a polarizer. In addition, in this specification, the "front side" means the display surface side, and the "back side" means the backlight side. In addition, the "front side" in this specification means the normal direction of the display surface, and the "front contrast (CR)" is calculated from the white brightness and the black brightness measured in the normal direction of the display surface. Compared. The present invention relates to a VA liquid crystal display device characterized in that it has a field of a first phase difference satisfying the following formula between a VA type liquid crystal cell and a rear side polarizer.

Onm ^ Re (590) ^ 10 nm, and |Rth(590)| ^ 25 nm Heretofore, the light source of the liquid crystal display device uses a backlight that illuminates light having directivity as a backlight disposed on the rear side. The light from the liquid crystal display device obliquely incident on the liquid crystal display device is scattered in the liquid crystal cell and the color filter in the liquid crystal cell, and the component scattered in the front direction is one of the causes of lowering the front surface CR. As a result of the review by the inventors, it is found that the light from the backlight incident on the rear side polarizer enters the liquid crystal cell, and the decrease in the front surface CR in the phase difference region becomes remarkable. The reason is as follows. (i) The linearly polarized light from the backlight obliquely incident and passing through the back side polarizer is polarized by the Re and/or Rth in the phase difference field before passing through the phase difference field before entering the liquid crystal cell. Then, it is scattered to the front side due to the liquid crystal layer, the color filter layer, and the like in the liquid crystal cell. Among the light scattered in the front side, the component in the absorption axis direction of the front side polarizer (hereinafter, the case where -12-201118476 is "A component") is absorbed in the polarizer but the transmission axis direction of the front side polarizer The component (hereinafter, referred to as "B component") passes through a polarizer. This B component is responsible for reducing the front CR. If the B component is reduced, the front contrast can be improved. According to this point of view, the smaller the Rth system in the phase difference region between the rear side polarizer and the liquid crystal cell, the better. Further, (ϋ) in the retardation film constituting the phase difference region, the distribution of the optical axis is produced, and the axial shift occurs when it is bonded to the polarizer. Since the axis offset promotes the circular polarization of the light from the backlight, the front contrast can be improved if the axis offset is reduced. In the case of this viewpoint, the smaller the R e system in the field of the phase difference between the rear side polarizer and the liquid crystal cell, the better. Based on the above findings (i) and (ii), it was found that a VA type liquid crystal display device having a high front CR can be obtained by satisfying the following formula 'in the first phase difference region between the rear side polarizer and the liquid crystal cell. And achieved the completion of the present invention.

Onm ^ Re(590) ^ 10 nm, and |Rth(590)| ^ 25 nm, that is, according to the present invention, by forming the above configuration, a VA type liquid crystal display device which achieves high frontal contrast can be provided. Further, in the present invention, since only a phase difference film having a suitable Re and a low Rth is disposed in the phase difference between the rear side polarizer and the liquid crystal cell, the polarizer is deformed by heat from the backlight, and the like. Adding stress to the retardation film, but the optical anisotropy of the phase difference film of low Re and low Rth

ί S -13- 201118476 The change has not reached its limit. As a result, the light leakage occurring at the four corners of the screen observed in the conventional VA liquid crystal display device, and the so-called failure in which the display quality of the corner mura is lowered can be alleviated. Further, in the second phase difference region between the front side polarizer and the liquid crystal cell, in the aspect of displaying a predetermined optical characteristic, it is possible to provide CR which can increase the oblique direction and reduce color shift when black display is performed (color Shift) liquid crystal display device. Fig. 1 is a cross-sectional schematic view showing an example of a VA liquid crystal display device of the present invention. Further, in the figure, the relative relationship of the thicknesses of the respective layers does not necessarily coincide with the relative relationship of the thicknesses of the respective layers of the actual liquid crystal display device. The VA type liquid crystal display device shown in Fig. 1 has a VA type liquid crystal cell LC, and a rear side polarizing plate PL1 and a front side polarizing plate PL2 sandwiching the same. The backlight 10 is disposed on the outer side of the rear polarizing plate PL1, and the light from the backlight 1 is incident in the order of the rear polarizing plate PL1, the liquid crystal cell LC, and the front polarizing plate PL2. Composition. The liquid crystal cell LC is a VA mode liquid crystal cell which becomes vertical alignment when black is displayed. The liquid crystal cell LC is formed by arranging the upper substrate 26 and the lower substrate .24 formed of glass or the like, and has an alignment film (not shown) and an electrode layer (not shown) on the substrate. Further, a color filter layer (not shown) is provided on the substrate on the front side. The rear polarizing plate PL1 has a polarizer 12, a first retardation film 16 and an outer protective film 20 on the surface thereof, and a front polarizing plate PL2, respectively, having a polarizer 14 and a second retardation film on the surface thereof. 18 -14- 201118476 and outer protective film 22. The polarizers 12 and 14 are arranged such that their absorption axes are orthogonal to each other. The first retardation film disposed between the polarizer 12 of the rear polarizing plate PL1 and the liquid crystal cell LC is a retardation film satisfying 〇nm S Re(590) ^ 10 nm and |Rth(590)|^ 25 nm. In the range satisfying this characteristic, a plurality of retardation films may be present. For example, a protective film of the polarizer 12 may be additionally disposed between the first retardation film 16 and the polarizer 12, but the phase difference between the first retardation film 16 and the protective film is equal to 〇nm S Re (590) S l〇nm' and I Rth(590)丨S 25nm. That is, a plurality of retardation films may be present between the polarizer 12 and the liquid crystal cell LC, but the total phase difference of the plurality of sheets satisfies the above characteristics. By satisfying the above characteristics by the retardation film disposed between the polarizer 12 and the liquid crystal cell LC, the VA type liquid crystal display device shown in FIG. 1 can suppress oblique incident light from the backlight 1 to be incident on the liquid crystal cell LC. The previous roundness was polarized. As a result, the contrast reduction caused by the reasons (1) and (ii) above can be alleviated, and a high positive CR can be achieved. As a result of intensive review by the present inventors, the effects of the present invention are known in the front side substrate of the VA type liquid crystal cell (including the substrate 26 of FIG. 1 and all the members formed on the substrate). The aspect of the substrate comparison (C Rr) of the substrate (including the substrate 24 in FIG. 1 and all the members formed on the substrate) becomes particularly remarkable. Further, the ratio (CRf/CRr) of the component contrast (CRr) of the member of the front substrate to the rear substrate is CR or more, that is, in the case where the 3 S CRf/CRr is known, the effect of the present invention becomes Significant. Here, when the VA type liquid crystal cell (LC in Fig. 1) is decomposed in two substrates (substrates 24 and 26 in Fig. 1), the front side substrate (Fig. [S] -15-201118476 1 in the substrate 26 The collective name of the member formed on the substrate, the substrate (the substrate 24 in FIG. 1) on the rear side of the front substrate, and the member formed on the substrate are collectively referred to as the rear substrate. Examples of the member include a color filter, a black matrix, an array member (such as a TFT array), a projection on a substrate, a common electrode, a slit, and the like, and various members. That is, the comparison of the members of the rear substrate and the front substrate of the liquid crystal cells refers to the comparison of the respective substrates and the various members formed on the respective substrates. The details of the measurement method are described in the examples below. As a result of intensive review by the inventors of the present invention, it is known that the retardation in the field of the first phase difference between the back side polarizer and the liquid crystal cell greatly affects the front surface CR of the liquid crystal display device. This reason is due to the so-called scattering of liquid crystal cells in various members (for example, a liquid crystal layer, a color filter, a black matrix, an array member, a protrusion formed on a substrate, a common electrode member, a slit member, etc.). Optical phenomena with diffraction and polarization dependence for their optical phenomena. Hereinafter, it demonstrates in detail. In general, since the liquid crystal layer is in a vertical alignment state when the VA liquid crystal display device is displayed in black, the polarization state does not change even after passing through the liquid crystal layer after the linear polarization of the rear side polarizer and moving in the normal direction. In principle, all of the absorption axes of the front side photons are absorbed. That is, it can be said that in principle, there is no light leakage in the normal direction in the black display. However, the front transmittance of the VA type liquid crystal display device at the time of black display is not zero. The reason is that the liquid crystal molecules in the liquid crystal layer are shaken, and it is known that light incident on the liquid crystal layer is shaken to some extent. Was scattered. The more completely the light system incident on the liquid crystal layer does not contain the linearly polarized light component absorbed by the absorption axis of the front side polarizer, the greater the influence becomes, and the tendency of the front light leakage increases. . In other words, when the phase difference in the phase difference region disposed on the rear side is larger, and the rounded polarization is converted into a high circular polarization, the front light leakage caused by the shaking can be reduced. However, as a result of the review by the inventors, it is known that the phase difference in the phase difference region between the rear side polarizer and the liquid crystal layer is one of the causes, in addition to the shaking of the liquid crystal molecules in the liquid crystal layer. A certain light from the directivity of the backlight passes through the back side polarizer, and when it enters the phase difference field from the oblique direction, the linearly polarized light is converted into a circularly polarized light due to the phase difference. The circular polarization is diffracted and scattered by the array member in the liquid crystal cell and the color filter layer, and at least a portion becomes light advancing in the front direction. Since the circularly polarized light contains a linearly polarized component that cannot be cut by the absorption axis of the front side polarizer, it causes light leakage in the front direction and a decrease in the front CR even in the case of black display. The optical phenomenon generated by the array member and the color filter layer is not completely smooth, for example, on the surface of the array member and the color filter layer, and has a certain degree of unevenness or a scattering factor or the like in the member. The effect caused by the optical phenomenon generated by the array member and the color filter layer on the light leakage in the front direction is greater than that caused by the shaking of the liquid crystal molecules in the liquid crystal layer described above. Furthermore, as a result of the intent of the present inventors, the optical phenomenon (diffraction, scattering, etc.) which is obtained by passing through the predetermined member of the liquid crystal cell by the light which is circularly polarized by the phase difference field is known. The aspect in which light passes through the member before entering the liquid crystal layer or after passing through the liquid crystal layer, and affects light leakage in the front direction becomes different. In FIG. 1, -17-201118476, for example, as shown in FIG. 2(a), an array member is disposed on the inner surface of the rear substrate 24, and when a color filter is disposed on the inner surface of the front substrate 26, light is present. Passing through the array member before entering the liquid crystal layer, and passing through the color filter after passing through the liquid crystal layer. In the member (e.g., the array member) through which light is incident before the liquid crystal layer, the circular polarization of the incident light is determined by the phase difference of the region of the rear phase difference (the first phase difference region) passing through it. On the other hand, the member (e.g., color filter) that passes after entering the liquid crystal layer is determined by the phase difference in the back phase difference region, and is also determined by the phase difference of the liquid crystal layer. Here, in the case of a liquid crystal display device for VA, Δ nd (590) of the liquid crystal layer (thickness (nm) of the d-type liquid crystal layer, and refractive index anisotropy of the liquid crystal layer at the wavelength λ of the d-type liquid crystal layer, AndU The product Δη(λ) and d) is set at about 2 80 to 3 50 nm. It is also possible to set the phase difference in the field of the rear side phase difference so that the light leakage of the array member is reduced, and the rounding ratio is inversely increased when passing through the liquid crystal. Since the rounding ratio of the incident polarized light becomes smaller as the phase difference in the back phase difference region is larger, the rear side phase is set in accordance with the member that is incident on the light before passing through the liquid crystal layer or the member that is incident on the light after passing through the liquid crystal layer. The phase difference in the difference field, the result reverses the effect of the component on the light leakage in the front direction. The level of the phase difference in the rear phase difference region, the tendency to influence the light leakage in the front direction through the respective members, and the influence of the influence thereof are summarized in Fig. 2(b). In addition, in Fig. 2(b), "t" indicates that the rear phase difference field can improve the effect of the front CR as compared with the case of the high hysteresis, and "I." indicates the effect of lowering the front CR. The number of roots is a weak reference for '201118476', and the greater the number of roots, the stronger the effect. As shown in Fig. 2(b), the color filter is disposed on the front substrate and the array member is disposed on the rear substrate. In the case of the VA type liquid crystal display device, when the phase difference in the phase difference of the rear side is lowered, the optical phenomenon caused by the array member disposed on the rear substrate causes the light leakage in the front direction to act in the mitigating direction, and On the one hand, the optical phenomenon caused by the color filter layer disposed on the front substrate causes the light leakage in the front direction to act in an increasing direction, that is, the relationship between the two sides is offset. For example, on the back side In the same manner as the both sides of the substrate and the front substrate, the liquid crystal cell is formed as a member that causes a decrease in contrast, and the first phase difference region on the rear side is low hysteresis, and is also disposed on the rear substrate. member (for example, in FIG. 2(b) is an array member), the effect of the front surface CR is increased, or the member disposed on the front side substrate (for example, the CF member in FIG. 2(b)) reduces the effect of the front surface CR, and there are some eliminations. In other words, the feature of the present invention in which the first phase difference region in the rear side is a low hysteresis is that the rear substrate has many components that cause a decrease in contrast, and is displayed. In addition, the retardation in the first phase difference region on the rear side and the influence on the front surface CR are substantially negligible in the liquid crystal display device having a low front CR. However, it is provided in recent years. The liquid crystal display device having a high front CR (for example, a front CR of 1500 or more) cannot be ignored in the case of further improving the front surface CR. The present invention is directed to a liquid crystal display device having a front CR of 1500 or more, and further improving the front CR. In particular, FIG. 2 shows a general liquid crystal cell having a color filter (CF.) on the inner surface of the front substrate 26 and an array member on the inner surface of the rear substrate 24. As an example, in the liquid crystal display device of the present invention, the positions of the CF and the array member are arbitrary. For example, if the color filter is directly disposed on the array (COA, color filter on array), CF The aspect disposed on the side of the substrate side having the array member is of course also included in the present invention. Further, if the array member is disposed on the side of the front substrate 26, the function of the array member becomes the same as that in FIG. 2(b). The CF members are the same, and if the CF is disposed on the side of the rear substrate 24, the function of the CF member becomes the same as that of the array member of Fig. 2(b). The same is true for other members (for example, black matrix) not shown. If the member is disposed on the front substrate 26 side, the array member functions as the CF member in FIG. 2(b), and if the member is disposed on the rear substrate 24 side, the member The action system becomes the same as the array member of Fig. 2(b). As described above, it is known that the ratio of the component contrast (CRr) of the member-side contrast CRCR to the rear side substrate (the substrate 24 in FIG. 1) (CRf/CRr) is 3 or more in the front substrate (the substrate 26 in FIG. 1). That is, the aspect of 3 S CRf/CRr is satisfied, and the effect of the present invention becomes remarkable. As an example of the liquid crystal cell satisfying the relationship, for example, the rear substrate is a liquid crystal cell of a CO A substrate. The CO A is described in detail in the publications of JP-A-2005-99499 and JP-A-2005-258004. In addition, as described above, the incident polarization state dependence of light leakage during black display due to optical phenomena in CF, black matrix, and array members all tend to be the same, but the contribution from the black matrix The relative -20-201118476 is small, so the COA formed by disposing the c F on the side of the substrate side after the array member can be located at any position in the liquid crystal cell at the black matrix position of the liquid crystal display device, preferably on the back side. Between the polarizer and the liquid crystal layer. Further, examples of the liquid crystal cell satisfying 3 S CRf/CRr may be, for example, a liquid crystal cell having no color filter, and a liquid crystal cell driven without field sequential printing of a color filter. The liquid crystal cell which is driven by the field sequential system is described in detail in Japanese Laid-Open Patent Publication No. 2009-42446, Japanese Patent Application Publication No. Hei. No. Hei. Reference. The so-called field sequential driving system utilizes a backlight unit that sequentially emits independent three primary colors of light. A backlight unit having an LED is preferable as the light source. For example, a backlight unit having a light-emitting element of red, green, and blue as a light source is preferably used. In addition, an array member may be disposed on the rear substrate, and a liquid crystal cell of a general color filter may be disposed on the front substrate. If the contrast of the color filter is high, the above conditions are of course satisfied. 3 $CRf/CRr of a preferred aspect of the invention. As an example of the high-contrast color filter, a color filter using a pigment having a smaller particle diameter can be used as compared with the pigment used in CF. As an example of a method for producing a high contrast color filter using a pigment, the following two methods can be mentioned. (I) A method of mechanically finely pulverizing pigment particles by using a disperser called a sand mill, a roll mill, or a ball mill, and is described in detail in JP-A-2009-144126, for example, and can be referred to. . (II) A method of adjusting the fine pigment particles of Micro-21-201118476 by dissolving the pigment in a solvent and then precipitating it is described in detail in JP-A-2009-134 1 78. In addition to pigments, a method of using dyes to produce high contrast color filters has also been proposed. A detailed description is given in Japanese Laid-Open Patent Publication No. 2005-173532, which is incorporated herein by reference. By using such a highly contrast-colored color filter, even a general configuration can be a liquid crystal cell satisfying each of CRf/CRr. Further, in Fig. 1, the optical characteristics of the second retardation film 18 having the front side polarizing plate PL2 are preferably used to improve the contrast in the oblique direction and to reduce the color shift in the black display. Further, And(;l) of the liquid crystal layer of the VA type liquid crystal cell LC is as described above, and is generally about 280 to 350 nm. The retardation 値 of the second retardation film 18, particularly the preferred range of Rth, can be varied in accordance with the Δη(1(λ) of the liquid crystal layer. To improve the oblique contrast, the comparison with Δη^; A combination of a good retardation film is described in various publications, and is described in, for example, Japanese Patent Nos. 3,282,986, 3,666,666, and 3,556,159, each of which is incorporated herein by reference. The preferred range of the optical characteristics in the second phase difference field is as follows. Further, Δη ά (590) of the VA type liquid crystal cell is generally about 280 to 350 nm, in order to increase the transmittance at the time of white display as much as possible. On the other hand, when Δ nd (590) is 280 nm or less, the white luminance is slightly lowered with the decrease of ^11 (1 (590), but since the thickness d of the unit cell is small, high-speed response is obtained. In the liquid crystal display device of the present invention, if the first retardation field in the rear side is low hysteresis, the light leakage in the front direction becomes small. 22-201118476 The so-called high front surface R R is obtained. It is effective in any Δη (1 (590) liquid crystal display device. The VA liquid crystal display device of Fig. 1 shows that the first retardation film 16 and the second retardation film 18 are used as the polarizers 12 and 14, respectively. The protective film also has a functional embodiment, but the present invention is not limited to the embodiment. For example, between the first retardation film and the second retardation film and the polarizers 12 and 14, polarized light may be disposed by other methods. As described above, the protective film disposed between the first retardation film and the polarizer 12 is all of the laminated body of the first retardation film, and must satisfy the first phase difference. Obtained characteristics In addition, the rear side polarizer 12 has a protective film 20 on the surface of the backlight 10 side thereof, and further has an antifouling film, an antireflection film, an anti-glare film, an antistatic film, etc. on the surface thereof. In addition, the front side polarizer 14 has a protective film 22 on its display surface side surface, and further has an antifouling film, an antireflection film, an anti-glare film, and the like on the surface thereof. A functional film such as an antistatic film. However, in the case where a large phase difference is shared on one side to perform optical compensation as described above, a film having a large phase difference is conventionally disposed on the rear side. The present invention is generally disposed on the front side, and it is generally considered that the yield as a polarizing plate can be improved. The reason is explained. The film having a large phase difference has a step of extending at a high magnification because it does not add a lot of additives to the film. It is also possible to manufacture an inexpensive film (so-called flat TAC = Re is 0~10nm, Rth is 30~80nm triethylene cellulose film, etc.), or with a small phase difference -23-201118476 Compared with the film, it is difficult to widen the film. In a general liquid crystal display device, a horizontal liquid crystal cell is used, and the absorption axis of the front side polarizer is generally arranged in the horizontal direction (left-right direction), and the absorption of the rear side photon is used. The shaft is arranged in a vertical direction (up and down direction). Further, in industrial production, a roll-to-roll method is generally used to bond a polarizer and a retardation film. When the polarizing plate is bonded to the liquid crystal cell, the film having a large phase difference is disposed on the front side, and the width direction of the polarizing plate can be used with high efficiency, and the yield can be improved. The rear side is disposed as in the present invention. In the case of a phase difference film having a small phase difference, it is easy to make the film into a wide film, and the yield can be further improved by combining with a wide polarizer. As a result, the amount of discarded polarizing plates can be reduced. Here, specific numbers are used for explanation. In general, the width of the retardation film is mostly 1100 mm, 1300 mm, 1500 mm, 2000 mm, 2500 mm > the thickness of the film is mostly 25/zm, 40//m, 80# m. The roll length of the wound film is mostly 2500 m and 4000 m. On the other hand, if the screen size of the VA type liquid crystal display device is for television use, the screen size is 20 inches, 32 inches, 40 inches, 42 inches, 52 inches, 68 inches, and the like. For example, considering that the 42-inch (standard 4:3) screen width is 853mm (42 inches wide and 16:9 is 930mm), the screen height is 640mm (42 inches wide). 523mm). In the conventional mode in which a film having a large phase difference is disposed on the rear side, for example, a retardation film of 1300 mm and 1500 mm width is used as a phase difference film for one screen in the width direction. In this aspect, since a film having a large phase difference is disposed on the front side, for example, -24-201118476, even if it is a 1300 mm or 1500 mm wide retardation film, if the height of the phase difference film is used in the width direction of the phase difference film, it is possible to be in the width. The phase difference film for the two screens is used in the direction, and the productivity is nearly doubled. The size of the TV is increased year by year, but for example, since the picture width of the 65-inch (standard) system is 991 mm and the picture height is 1321 mm, even in the conventional rear side configuration, even the widened 2 0 0 0 mm The film may be a phase difference film which uses only one type of picture in the width direction. As in this aspect, the front side is arranged in a phase difference film for two kinds of pictures in the width direction. Further, since the screen width of the 68-inch (wide) screen is 1505 mm and the screen height is 84 6 mm, nearly twice as much productivity can be expected. The mode of the VA liquid crystal display device of the present invention may be any one, specifically, MVA {Multi-domain Vertical Alignment> multi-domain vertical alignment type, PVA (Patterned Vertical Alignment) type. Any of Optical Alignment and PSA (Polymer-Sustained Alignment). The details of these modes are described in detail in JP-A-2006-215326 and JP-A-2008-538819. As described above, a high contrast color filter can also be used in the present invention, and a color filter having a general liquid crystal display device can of course be used. In general, a color filter is a color filter in which a plurality of different colors (e.g., three primary colors of red, green, and blue light, transparent, yellow, cyan, etc.) are arranged in a pixel portion of a substrate. There are various methods for producing the same, and generally, for example, a material for coloring (organic pigment, dye, carbon black, etc.) is used to prepare a color-sensitive photosensitive composition using a photoresist (also known as colorless). In the case of the pattern, it is applied on a substrate to form a layer, and the pattern is formed by a lithography method. There are various methods for applying the colored photosensitive composition to a substrate. For example, in the initial stage, a spin coating method is used, and from the viewpoint of liquid storage, a slit & rotary coating method is used. A slit coating method is employed. Further, there are a roll coating method, a bar coating method, an α mode coating method, and the like. Further, in recent years, after a pattern called a pixel separation wall is formed by a lithography method, a color of a pixel can be formed by an inkjet method. In addition, a method of combining a colored non-photosensitive composition and a photosensitive positive resist, a printing method, an electrodeposition method, a film transfer method, and the like are known. The color filter used in the present invention can also be produced by any method. The material for forming the color filter is also not particularly limited. As the coloring material, any one of a dye, an organic pigment, and an inorganic pigment can also be used. The dyes have been reviewed based on the requirements of high contrast, and in recent years, the dispersion technology of organic pigments has been advanced, and finely crushed pigments such as salt honing methods or micronized pigments by the accumulation method have been used. Used for high contrast. Any coloring material can also be used in the present invention. In addition, the effect of the front contrast enhancement of the present invention can be further improved by adjusting the angular profile of the outgoing light from the backlight. Specifically, since the absolute contrast of the front contrast is increased when the backlight having a higher light collection property is used, the increase in the absolute 値 of the front CR shown in the present invention also becomes large. The index of the light collecting property is expressed, for example, by a ratio 1 (01/1 (45° pairs of outgoing light intensity 1 (0°) at the front side) at a polar angle of 45 degrees (45°). When it is large, a so-called light-collecting backlight is formed. As a light-collecting back -26-.201118476 light, a ruthenium film having a light collecting function is provided between the diffusion film and the liquid crystal panel. In the prism film, the light emitted from the light exit surface of the light guide plate and diffused by the diffusion film is efficiently collected in an effective display area of the liquid crystal panel. The liquid crystal of the backlight of a general direct type is mounted. The display device is provided, for example, on a liquid crystal panel composed of a color filter or a liquid crystal layer between a transparent substrate or a polarizing plate, and a backlight provided on a lower surface side thereof. The brightness of a registered trademark of 3M Company of the United States Brightness Enhancement Film (BEF) is a representative example. BEF is a film in which the unit of the triangular shape of the cross-section is periodically arranged in one direction on the film substrate, and the wavelength of the light is compared with the wavelength of the light to have a large size (pitch). B The EF system collects light from "off-axis" and redirects or "recycles" the light toward the viewer on the "on-ax is". A patent document having a repeating array structure in which a BEF is represented by a repeating array structure is disclosed in the patent document, and many examples are known in the Japanese Patent Publication No. 1 - 3 7 8 0 1 and JP-A-6- Further, it is also preferable to use a lens array sheet in order to improve the light collecting property. The lens array sheet has a plurality of unit lenses which are formed into a convex shape at a predetermined pitch. a lens surface in which a lens surface is arranged in a second dimension. The lens surface of the lens surface is formed by a light-reflecting layer in which the light-reflecting layer in the non-light-collecting surface of the lens is formed on the flat surface. In addition, in order to form a lenticular lens surface in which a convex cylindrical lens formed at a predetermined pitch is arranged in a parallel direction, the opposite side of the lens surface forms a flat surface, and the flat surface is also formed on the flat surface. Can form a lens array sheet formed by reflecting a light reflection layer of stripe-shaped light in the longitudinal direction in the non-light-collecting surface of the convex -27-201118476 cylindrical lens. Alternatively, for example, a cylindrical curved surface may be used. a lenticular lens array sheet in which the unit lenses are arranged in one direction in the plane, or a unit lens formed of a dome-shaped curved surface having a bottom shape of a circular shape, a rectangular shape, a hexagonal shape, or the like, and an in-plane 2 dimensional element A lens array sheet, etc., which are arranged in such a manner, are disclosed in Japanese Laid-Open Patent Publication No. Hei 10-241434, JP-A-2001-201611, JP-A-2007-256575, JP-A-2006-106197, JP-A-2006- It is described in each of the publications of No. 208,930, JP-A-2007-2,13035, and JP-A-2007-41172, and can be referred to. The present invention can also exhibit an effect in the aspect of the display in which the color reproduction domain is expanded by adjusting the spectrum of the outgoing light of the backlight and the transmission spectrum of the color filter. Specifically, it is preferable to use a white backlight that combines and mixes a red LED, a green LED, and a blue LEO in a backlight. In addition, the half-turn amplitude of the exiting light peaks of the red LED, the green LED, and the blue LED is preferably small. In the case of an LED, the half-turn wavelength range is as small as about 20 nm, and the peak wavelength is R (red) to 610 nm or more, G (green) to 530 nm, and B (blue) to 480 nm or less. The color purity of the light source itself. Further, it has been reported that, in addition to the peak wavelength of the LED, the spectral transmittance of the color filter can be reduced as much as possible, and the color reproducibility can be further improved, and the NTSC ratio can have a characteristic of 100%. For example, it is described in Japanese Laid-Open Patent Publication No. 2004-78102. The red color filter preferably has a small transmittance of the green LED and the blue LED at the peak position, and the green color -28-201118476 filter preferably has a small transmittance of the blue LED and the red LED at the peak position. Preferably, the blue color filter has a small transmittance of the red LED and the green LED at the peak position. Specifically, it is preferable that these transmittances are all 〇.1 or less, preferably 0.03 or less, and more preferably 〇.〇1 or less. The relationship between the backlight and the color filter is described in, for example, Japanese Laid-Open Patent Publication No. 2009-19266, the disclosure of which is incorporated herein by reference. In addition, it is preferable to use a laser light source in the backlight to enlarge the color reproduction domain. The peak wavelengths of the red, green and blue laser sources are preferably 430-480 nm, 520-550 nm, and 620-660 nm, respectively. A backlight of a laser light source is described in Japanese Laid-Open Patent Publication No. 2009-14892, which is incorporated herein by reference. Hereinafter, various members used in the VA liquid crystal display device of the present invention will be described in detail. 1. In the first phase difference region, the first phase difference region composed of one or two or more retardation layers disposed between the rear side polarizer and the VA type liquid crystal cell satisfies Statement,

Onm ^ Re(590) ^ 10nm, and |Rth(590)| ^ 25nm The first phase difference domain satisfies the following formula,

Onm ^ Re(590) ^ 5nm, and |Rth(590}| ^ 1 Onm satisfy the following formula as better.

Onm ^ Re (5 9 0) ^ 3 nm > and |Rth(590)| ύ 5 nm In-plane hysteresis in the first phase difference domain 値Re wavelength dispersion, in the visible light field, the wavelength increases to become a long wavelength Degree, showing so-called

r r-I -29- 201118476 Reverse dispersion is preferred. That is, it is preferable to satisfy 1^(450)<1^(550)<(1^(590)<1^(630). The reason is that Re in the first phase difference domain is inverse wavelength dispersion. In the case of the property, the center wavelength in the visible light region is about 550 nm, and if the optical characteristics are optimized, the entire visible light region is optimized and optimized. Ideally, the Re(A) in the first phase difference domain is divided by the wavelength; The crucible is fixed, and the migration on the Pioncare ball in the visible light field is also independent of the wavelength, and can also solve the problem of color shift caused by the oblique direction. The front surface CR of the retardation film which is disposed in the first phase difference region disposed on the rear side is preferably 0.5 or less, preferably 0.3 or less, more preferably 0.2 or less. Further, in the present specification, the film is fogged. The measurement method of the degree is as follows. The film sample is prepared to be 40 mm x 80 mm, and a haze meter (NDH-2000, manufactured by Nippon Denshoku Industries Co., Ltd.) is used in an environment of 25 ° C and 60% RH in accordance with JIS K-6714. The measurement may be performed by one or two or more retardation films. The material is not particularly limited. As the film satisfying the above characteristics, a cellulose-based film and an acrylic polymer film are preferred. The cellulose-based film: In the present specification, the so-called "deuteration" "Cellulose-based film" refers to a film containing deuterated cellulose as a main component (50% by mass or more of the total component). In the production of the film, the cellulose-derived hydroxyl-based hydrogen atom is deuterated. The thiol group of the above-mentioned deuterated cellulose-based cellulose is -30-201118476 and its substituent system can use a fluorenyl group having 2 carbon atoms from the fluorenyl group to 22 carbon atoms. In the deuterated vitamins used in the present invention, the degree of substitution of the hydroxyl group in the cellulose is not particularly determined as 'the determination of the cellulose-substituted hydroxyl group of acetic acid and/or the fatty acid having 3 to 3 carbon atoms. The degree of substitution can be obtained by calculation. The measurement method can be carried out in accordance with ASTM D-817-91. Further, a phase difference film material constituting the first phase difference phase difference domain of the present invention can be used. Suihua In the case of the sulphate, the ruthenium cellulose described in detail in [0019] [0025] of the Japanese Patent Publication No. 2006-184640 is used. The degree of substitution of the cellulose is not particularly limited, and the degree of substitution of the thiol group of the cellulose is 2.30 to 3.00. In addition, in order to obtain a retardation film having a haze, it is preferred that the thiol substitution degree is low, and the thiol group is preferably used. The degree is preferably 2.30-2.65, 2.35-2.60 is better, and 2.40~2·60 is better. On the other hand, in order to show that the retardation film has a higher degree of reverse wavelength dispersion thiol substitution, specifically, Preferably, 2.65 to 3.00 is 2.75 to 3.00, and 2.80 to 3.00 is more preferable. Further, among the mercapto substituents of the above deuterated cellulose, the total substitution degree is known to be 2 · 3 0 to 3.0 0 in the case of substantially consisting of at least two types of ethyl fluorenyl / propyl fluorenyl / butyl fluorenyl groups. In the case of the film, the optical anisotropy of the yttrium cellulose-based film can be effectively reduced. The preferred thiol substitution degree is 2.35 to 3.00, and more preferably 2.40 to 30,000. Further, in the phase difference film constituting the first phase difference, the fiber-optic film 22 is opened to a lower level. System-31- 201118476 The degree of polymerization of deuterated cellulose used in the process is 180-700. The cellulose acetate is preferably 18〇-550, 180~400 is better, 180 ~350 is especially good. When the degree of polymerization is too high, the viscosity of the deuterated cellulose in the coating solution becomes too high, and it becomes difficult to produce the film by casting. When the degree of polymerization is too low, the strength of the produced film is lowered. In addition, the average degree of polymerization can be measured according to the limit viscosity method of Uda et al. (Uda Kazuo, Saito Hideo, The Society of Science and Technology, Vol. 18, No. 1 'pp. 105-120, 1962). It is described in detail in Unexamined 9 - 9 5 5 3 8 . Further, the molecular weight distribution of the deuterated cellulose used in the production of the retardation film in the first phase difference region is evaluated by gel permeation chromatography, and the polydispersity index Mw/Mn (Mw is mass) The average molecular weight, Μη is a number average molecular weight), and the molecular weight distribution is narrow. As a specific Mw/Mn, 1.0~3·0 is better '1.0-2, 0 is better, 1.0-1.6 is the best." In order to make one piece or other film, the first phase difference is satisfied at the same time. The film of optical properties required in the field can simultaneously use deuterated cellulose and various additives. Examples of the usable additive include a compound which reduces the optical anisotropy, a wavelength dispersion adjuster, an ultraviolet preventive agent, a plasticizer, a deterioration preventive agent, fine particles, an optical property adjuster, and the like. Examples of the additives which can be used in the present invention include various additives described in detail in [〇〇26卜 [〇218] of JP-A-2006-184640. Further, the preferred range of the added amount is also the same as the preferred range described in the column. The compound which reduces the aforementioned optical anisotropy may or may not contain an aromatic group of -32-201118476. Further, it is preferable that the optical anisotropy reduction amount is 150 or more and 3,000 or less, and 170 is preferably 200 or more and 1000 or less. In this case, it may be a specific monomer structure or a combined oligomer structure or polymer structure. The compound which lowers the optical anisotropy is a solid or a solid having a melting point of 25 to 250 ° C, more preferably: j or a solid having a melting point of 25 to 200 ° C. Further, it is preferred that the compound of light is not volatilized during the drying process of the deuterated cellulose film. Addition of a compound which lowers optical anisotropy The cellulose solid content is preferably 0.01 to 30% by mass, preferably 5 to 20% by mass. In particular, in the case of the deuterated cellulose having a degree of substitution of 2.85 to 3.00, it is preferred to add at least one of the compounds to reduce the optical anisotropy and to reduce the optical anisotropy, and to mix two or more compounds at an arbitrary ratio. The period in which the compound having reduced optical anisotropy is used may be added at the end of the coating solution preparation step or at the end of the coating. In the present invention, as a cellulose-based film of the first phase difference, it is preferred to use a solution around the method, and it is possible to use a solution of dissolving deuterated cellulose in an organic liquid to produce a film. In the case of using the above-mentioned additives, the compound is in a range of equal molecular weight of 2,000 or less, and the number of monomer units is preferably a liquid at 25 ° C, a liquid at a temperature of 25 ° C, and a coating liquid having a reduced directionality. The amount is preferably 1 to 25 mass% relative to the hydrazine, and the compound is added in an amount relative to the hydrazine group. Can be used alone, . Further, the addition of the liquid film forming method can be carried out by using a part or all of the casting method used in the cloth liquid preparation step. The solution of the solvent (the coating additive can be added at any timing of the preparation of the coating liquid of the coating-33-201118476. For the production method of the cellulose-based film which can be used in the present invention, reference is made to JP-A-2006-184640 [0219] [0224]. A layer casting method such as a co-casting method, a sequential casting method, or a coating method may be used as the solution casting method. The co-casting method and the sequential casting method are used. In the case, first, a deuterated cellulose solution (coating liquid) for each layer is prepared. The co-casting method (multi-layer simultaneous casting) is performed on a casting support (belt or drum) from another slit or the like. At the same time, the coating liquid is extruded by a casting nozzle for each coating liquid for each layer (which may be three or more layers), and each layer is simultaneously cast, peeled off from the support at an appropriate timing, and dried. The casting method of forming a film is carried out by first casting a casting liquid for casting a first layer from a casting nozzle, and drying or not drying the coating liquid on the casting support first. The second self-casting nozzle is pressed out by the second The coating liquid for casting is used for casting, and if necessary, the coating liquid can be successively cast and laminated to the third layer or higher, and the support can be peeled off and dried at an appropriate timing to form a film casting method. In the coating method, a film of a core layer is formed into a film by a solution film forming method, and a coating liquid applied to the surface layer is prepared, and a coating liquid is simultaneously applied and dried on each side or both surfaces using a suitable coater to form a film. A method of forming a film of a laminated structure. Acrylic polymer film: an acrylic polymer film having an acrylic polymer having a repeating unit induced by at least one of (meth) acrylate as a main component - 34-201118476 Thin film β Preferred examples of the acrylic polymer film include a repeating unit induced by (meth)acrylic acid vinegar, and a lactone ring unit, a maleic anhydride unit, and a glutaric anhydride unit. At least one unit of the acrylic polymer is selected. The acrylic polymer is described in detail in JP-A-2008-9378, and can be referred to as a thin film. The molding method can be carried out by various film forming methods, and examples thereof include a solution casting method (solution casting method), a melt extrusion method, a calendering method, a compression molding method, etc. Among these film forming methods, A solution casting method (solution casting method) or a melt extrusion method is used. The solvent used in the solution casting method (solution casting method) may, for example, be a chlorine-based solvent such as chloroform or dichloromethane; toluene; An aromatic solvent such as xylene or benzene; an alcohol solvent such as methanol, ethanol, isopropanol, n-butanol or 2-butanol; methyl cellosolve, ethyl cellosolve, butyl cellosolve, Methylformamide, dimethyl hydrazine, dioxane, cyclohexanone, tetrahydrofuran, acetone, methyl ethyl ketone, ethyl acetate, diethyl ether, etc. These solvents can be used alone or in combination 2 The apparatus for performing the solution casting method (solution casting method) may, for example, be a drum type casting machine, a belt type casting machine, a rotary coater or the like. Examples of the melt extrusion method include a T die method, a blow molding method, and the like. In this case, the film forming temperature is preferably 150 to 350 ° C, more preferably 200 to 300 ° C. The thickness of the retardation film in the first phase difference region on the rear side is preferably as thin as possible, but in order to suppress corner unevenness, it is necessary to reduce the phase difference film deformation due to the stress on the retardation film. The film thickness of the retardation film constituting the first phase difference field is preferably 20/zm or more and 200//m or less, from the viewpoint of the corner unevenness and the manufacturing suitability of the -35-201118476. 2. The second phase difference region is disposed in the second phase difference region between the front side polarizer and the liquid crystal cell, and preferably adjusts the optical characteristics to help improve the contrast in the oblique direction and reduce the color shift in black display. shift. A preferred example of the second phase difference region satisfies 30 nm ^ Re(590) ^ 9 Onm, and 1 70 nm ^

Rth(590) S 300nm phase difference field. When it is in this range, it is possible to reduce the light leakage in the oblique direction in the case of black display when the general VA type liquid crystal cell (Δη£ΐ(590) is about 180 to 350 nm). Further, as described above, the hysteresis in the second phase difference region, particularly the preferred range of Rth, varies depending on the Δη (1 (λ) of the liquid crystal layer. Here, the first phase at the wavelength λ Rth in the difference domain is RthH), and Rth in the second phase difference region is Rth2 (λ), and the second phase difference is good for the liquid crystal layer AndU) and the first phase difference region Rth(λ). One example of the field satisfies Δ nd(590)-70 ^

Rthi(590) + Rth2(590) ^ Δηά(590)-10 is a phase difference field, preferably Δ nd(590)-60 ^ R th ι ( 5 9 0 ) + R th 2 ( 5 9 0) ^ Δ nd (590)-20 phase difference field. When it is within this range, the light leakage of the VA type liquid crystal cell in the oblique direction at the time of black display can be further alleviated. Further, as described above, in order to increase the transmittance at the time of white display (=increasing the front surface CR}, Δηί1 (590) of the liquid crystal layer is preferably 280 nm or more and 340 nm or less. In this case, the second phase difference field disposed on the front side is 2 2 0 nm ^ Rth ( 5 9 0 ) = 2 80 0 -36- 201118476 is preferred, 2 3 Ο nm ^ Rth(590) ^ 2 8 Ο η m is better. On the other hand, considering manufacturing In the case of suitability, the phase difference film using Rth(590) S 2 3 Onm is preferably used as the second phase difference field. In general, in order to obtain a phase difference film having a high phase difference, high stretching ratio is required. The elongation treatment or the addition amount of the additive which contributes to the phase difference is increased, and when the stretching ratio is increased, the film is likely to be cut. Further, when the amount of the additive is increased, the additive is oozing out from the film. In order to utilize the phase difference film of R th ( 5 9 0 ) S 2 3 Ο nm, the Δη (1(590) of the liquid crystal cell is preferably Δη(1(590) ^ 290nm, And(590) ^ 280nm is more Preferably, the second phase difference field may be formed by one phase difference film or In addition, the material of the film is not particularly limited as long as it satisfies the above characteristics. Various polymer films may be, for example, deuterated cellulose, polycarbonate polymer, or poly pair. Polyester polymer such as ethylene phthalate or polyethylene naphthalate, acrylic polymer such as polymethyl methacrylate, polystyrene or acrylonitrile. Styrene copolymer (AS resin) A styrene-based polymer, etc., and a polyolefin such as polyethylene or polypropylene, a polyolefin-based polymer such as an ethylene-propylene copolymer, or a vinyl chloride-based polymer can be used. Amidoxime polymer such as guanamine, quinone imine polymer, fluorene polymer, polyether fluorene polymer, polyetheretherketone polymer, polyphenylene sulfide polymer, -37-201118476 a dichloroethylene polymer, a vinyl alcohol polymer, a vinyl butyral polymer, an aryl ester polymer, a polyoxymethylene polymer, an epoxy polymer, or a polymer in which the polymer is mixed Select one or two or more types of polymerization As a main component, a polymer film is produced to satisfy a combination of the above characteristics, and it is used for producing a retardation film having a second phase difference. As a retardation film constituting the second phase difference, it is preferable to use 醯. The cellulose-based film can be used as a raw material of the fluorinated cellulose-based film constituting the retardation film in the second phase difference field, and the thiol substitution degree is preferably 2.00 to 3.00. Further, the film can be extended. Adjusted to the desired hysteresis, but from the point of view of the delay in the extension, the degree of substitution is lower. However, the lower the degree of substitution of the thiol group, the higher the Rth of the film when it is not extended. Therefore, the retardation film of the VA liquid crystal display device preferably has a thiol substitution degree of 2.0 0 to 2.6 5 , and 2.20 -2.65 is preferred, and 2.30~2.60 is preferred. On the other hand, in order to make the retardation film exhibit reverse wavelength dispersion, it is preferable that the thiol substitution degree is high. Specifically, 2.65 to 3.00 is preferable, 2.75 to 3.00 is preferable, and 2.80 to 3.00 is more preferable. Further, the cellulose deuterated cellulose is preferably cellulose acetate, and may be substituted with an ethyl hydrazine group or may be substituted with a fluorenyl group other than an ethyl hydrazine group or an ethyl fluorenyl group. Wherein, it is preferably a deuterated cellulose having at least one mercapto group selected from an ethyl group, a propyl group and a butyl group, and more preferably having at least two selected from the group consisting of an ethyl group, a propyl group and a butyl group. Sulfhydryl cellulose. Furthermore, it is preferred to use a fluorinated cellulose having an ethyl fluorenyl group, a propyl fluorenyl group and/or a butyl fluorenyl group, and the degree of substitution of the fluorene group is 1. 〇~2_97, and the propyl fluorenyl group and/or the butyl fluorenyl group-38- 201118476 has a degree of substitution of 0.2-2.5 deuterated cellulose. Further, the above-mentioned deuterated cellulose has a quality of 200 to 800, and has a mass average degree of polymerization of 250 to 550. The cellulose average used in the present invention has a number average molecular weight of 70,000. A molecular weight of 75,000 to 230,000 is preferred, and an average of 78,000 to 120,000 is preferable. In the same manner as the raw material of the deuterated cellulose which is used as the film for forming the first phase difference, the production of the deuterated cellulose film which constitutes the phase in the first phase difference region, such as a compound having reduced optical properties, can be used. The additive used in the second phase difference film in the phase difference region is preferably not used for the cellulose-based film. On the other hand, in the production of a fluorinated cellulose-based film for forming a second phase difference film, an enamel agent is preferred as an additive. As the hysteresis that can be used, a rod-like or discotic compound or a positive birefringent compound is used as the rod-like or disc-shaped compound, and it is preferable to use a compound of an aromatic ring as a hysteresis agent. . The amount of the hysteresis agent to be added is preferably from 0.1 to 30 mass%, more preferably from 0.5 to 30 parts by mass, per 100 parts by mass of the polymer component of the cellulose. The disc-shaped hysteresis 値 is expressed in the range of 1 part by mass of the above-mentioned deuterated cellulose resin, preferably in the range of 0.1 to 15 parts by mass, in the range of 0.1 to 15 parts by mass. A range of 10 parts by mass is used more preferably. Since the disk-shaped compound is excellent in the discovery of a rod-like compound in the Rth retardation, the hysteresis of the large Rth is

The average amount is better. Further, -230000 is a phase difference film having an average number of molecular weights and a phase difference is used for forming the phase of the first production phase. The retarder is used as a constituent. It is preferable to have at least two rod-like bismuth fibers, and the agent is relatively more suitable than the use of 05-20 Μ in the case of I-39-201118476. Two or more types of hysteresis 値 expression agents can also be used. The retardation 値 expression agent preferably has a maximum absorption enthalpy in the wavelength range of 250 to 400 nm, and substantially no absorption 値 in the visible light field. (1) Discotic compound The discotic compound will be described. As the discotic compound, a compound having at least one aromatic ring can be used. In the present specification, the "aromatic ring" includes an aromatic heterocyclic ring in addition to the aromatic hydrocarbon ring. For example, the compound of the [0038] to [0046] described in JP-A-2008-181105, for example, can be used for the production of the retardation film in the second phase difference field. Examples of the above-mentioned discotic compound which can be used include the compound represented by the following general formula (I). X3 N人N ... R2, 儿A () X2~Ν々χ1 R1 where XI is a single bond, 1 ft 4-, _〇_ or s-; X2 is a single bond, _NR5_, -Ο - or S -; X3 is a single bond, -NR6-, -〇_ or s·. Further, each of R1, R2 and R3 is independently an alkyl group, an alkenyl group, an aromatic ring group or a heterocyclic group; and R4, R5 and R6 are each independently a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a heterocyclic ring. Preferred examples (I-(1) to IV-(10)) of the compound represented by the above general formula (I) are shown below. The invention is not limited to these specific examples. . -40- 201118476

1-(3)

CH3 1-(5)

1-(7)

-41 201118476 1-(9) 1-(10)

COOCaHg 1-(11) 1-(12)

CH3 -42- 201118476 1-(17) 1-(18)

NH

NH

-43- 201118476 1-(26)

-44 - 201118476 I -(34)

-45- 201118476

-46- 201118476 ΟΗ3Η〇-ΚτΝγ1^〇- ΝγΝ ΝΗ 6CH3 11-(2)

II-(4) 11-(3)

-47- 201118476

-48- 201118476 111-(1) 111-(2)

-49- 201118476 111-(9)

N^N

ΝγΝ

II Bu (12) Q-9tntHh0 ΝγΝ

NH

0CH3 -50- 201118476 IV — (1) IV-(2)

IV-(3) IV-(4)

COOC^s IV-(5) IV-(6)

IV-(9) IV-(10)

COOC^Is (2) Rod-like compound In the present invention, in addition to the above-described disc-shaped compound, a rod-like compound having a linear molecular structure may be suitably used. The rod-like compound which can be used in the invention of the present invention is, for example, the compound of [0053] [0095] described in Japanese Patent Publication No. 2007-268898. (3) Positive birefringent compound The so-called positive birefringent compound is a light in which the refractive index of the light in the alignment direction is orthogonal to the alignment direction when light is incident on a layer formed by the axial alignment of the molecules. The refractive index of the polymer. The positive birefringence compound as described above is not particularly limited to an inherent birefringence enthalpy of polyamine, polyimide, polyester, polyether ketone, polyamidoxime, and polyester quinone. The positive polymer is preferably a poly-based polyester polymer or the like, and a polyester-based polymer is more preferable. The polyester-based polymer is a mixture of an aliphatic dicarboxylic acid having 2 to 20 carbon atoms and an aromatic dicarboxylic acid having 8 to 20 carbon atoms, and an aliphatic diol having a carbon number of '' and a carbon number of 4 to 20 Reaction of at least one type of diol selected from the group consisting of alkyl ether diols and carbon number 6-20 diols, and both ends of the reactants are reactants directly or in combination with monocarboxylic acid monohydric alcohols For the reaction of a class or a phenol, a so-called terminal blocking can also be carried out. This sealing is carried out because it does not contain a free carboxylic acid in particular, and is effective from the point of conservation. The acid using the polyester-based polymer of the present invention is preferably an aliphatic dicarboxylic acid residue having 4 to 20 carbon atoms or a residue having 8 to 20 carbon atoms and a dicarboxylic acid residue as a preferred carbon number 2~ 20 aliphatic dicarboxylic acid, such as oxalic acid, malonic acid, succinic acid, maleic acid, fumaric acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, ten Dialkyl acid and 1,4-cyclohexane dicarboxylic acid. The aromatic extract is larger than the aromatic amine carboxylic acid 1 2 , the aromatic or dicarboxylic acid of the terminal or the terminal dicarboxylic acid, the dicarboxylic acid -52- 201118476, and the aromatic dicarboxylic acid having a carbon number of 8-20 Are phthalic acid, terephthalic acid, isophthalic acid, 1,5-naphthalene dicarboxylic acid, 1,4-naphthalene dicarboxylic acid, 1,8-naphthalene dicarboxylic acid, 2,8-naphthalene dicarboxylic acid Acid and 2,6-naphthalene dicarboxylic acid and the like. Among these, preferred aliphatic dicarboxylic acids are malonic acid 'succinic acid, maleic acid, fumaric acid, glutaric acid, adipic acid, sebacic acid, and 1,4-cyclohexane. Dicarboxylic acid, as aromatic dicarboxylic acid, phthalic acid, terephthalic acid, isophthalic acid, 1,5-naphthalene dicarboxylic acid, 1,4-naphthalenedicarboxylic acid, especially good aliphatic The dicarboxylic acid component is succinic acid, glutaric acid, adipic acid, and the aromatic dicarboxylic acid is phthalic acid, terephthalic acid, and isophthalic acid. At least one of the above-mentioned aliphatic dicarboxylic acid and aromatic dicarboxylic acid, or a combination thereof, may be used in combination without particular limitation, and there is no problem in combining several kinds of components. The diol or aromatic ring-containing diol used in the above-mentioned positively birefringent compound may be, for example, an aliphatic diol having 2 to 20 carbon atoms, an alkyl ether diol having 4 to 20 carbon atoms, and a carbon number of 6~. The aromatic ring of 20 contains the diol selected. Examples of the aliphatic diol having 2 to 20 carbon atoms include alkyl diols and alicyclic diols, for example, ethylene glycol ' 12-propylene glycol, i, 3-propylene glycol, 1,2-butanediol, I,3-butanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl-1,3-propanediol (new Pentanediol), 2,2-diethyl-1,3-propanediol (3,3-dihydroxymethylpentane), 2-n-butyl-2-ethyl-1,3-propanediol (3, 3-dimethylol heptane), 3-methyl-1,5-pentanediol, 1,6-hexanediol '2,2,4-trimethyl-1,3-pentanediol, 2 -ethyl-1,3-hexanediol, 2-methyl-i,8-octanediol, 19-nonanediol, ^(癸癸diol, 1,12-octadecanediol, etc., etc. The diol system may be used as a mixture of two or more kinds of [S]-53-201118476. Preferred aliphatic diols are ethylene glycol, 1,2-propylene glycol, and 1,3-propanediol. 1,2-butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 3-methyl-1, 5. pentanediol, 1,6-hexanediol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, especially ethylene glycol, 1,2-propanediol, 1,3- Glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexane The alcohol and 1,4-cyclohexane dimethanol. The alkyl ether diol having 4 to 20 carbon atoms is preferably, for example, polytetramethylene ether glycol, polyvinyl ether glycol or polypropylene ether. The alcohol and the combination thereof are not particularly limited, and are preferably 2 to 20, preferably 2 to 10, more preferably 2 to 5, and particularly preferably 2 to 4. Examples include, for example, Carbowax resin, Pluronics resin, and Niax resin, which are representative and useful commercially available polyether diols. The aromatic diols of 6 to 20 are not particularly limited, and examples thereof include bisphenol A' 1,2-hydroxybenzene, 1,3-hydroxybenzene, 1,4-hydroxybenzene, and 1,4-benzenedimethanol. Preferably, it is bisphenol A, 1,4-hydroxybenzene, and 1,4-benzenedimethanol. The above-mentioned positive birefringent compound is preferably a compound in which the terminal is an alkyl group or an aromatic group is blocked. By using a hydrophobic functional group to protect the end, there is a deterioration over time under high temperature and high humidity. Further, it is a cause of exhibiting a role of delaying the hydrolysis of the ester group. In order to prevent the both ends of the above-mentioned positive birefringent compound from being a carboxylic acid or an OH group, it is preferably protected with a monohydric alcohol residue or a monocarboxylic acid residue. -54- 201118476 In this case, the monohydric alcohol is preferably a substituted or unsubstituted monohydric alcohol having 1 to 30 carbon atoms, and examples thereof include methanol, ethanol, propanol, isopropanol, butanol, and isobutanol. Pentanol, isoamyl alcohol, hexanol, isohexanol, cyclohexanol, octanol, isooctanol, 2-ethylhexanol, decyl alcohol, isodecyl alcohol, third sterol, decyl alcohol, dodecanol An aliphatic alcohol such as dodecyl hexanol, dodecyl octanol, allyl alcohol or oleyl alcohol, a substituted alcohol such as benzyl alcohol or 3-phenylpropanol, or the like. Preferred terminal blocking alcohols are methanol, ethanol, propanol, propylene glycol, butanol, isobutanol, isoamyl alcohol, hexanol, isohexanol, cyclohexanol, isooctanol, 2 - Ethylhexanol, isodecyl alcohol, oleyl alcohol, benzyl alcohol, particularly preferred are methanol, ethanol, propanol, isobutanol, cyclohexanol, 2-ethylhexanol 'isodecyl alcohol, hydrazine: alcohol. Further, in the case of blocking with a monocarboxylic acid residue, the monocarboxylic acid used as the mono-acid residue is preferably a substituted or unsubstituted monocarboxylic acid having 1 to 30 carbon atoms. These may be aliphatic monocarboxylic acids or carboxylic acids containing aromatic rings. When a preferred aliphatic monocarboxylic acid is described, acetic acid, propionic acid, butyric acid, caprylic acid, caproic acid, capric acid, dodecanoic acid, stearic acid, or oleic acid may be mentioned as a single ring containing an aromatic ring. The carboxylic acid is, for example, benzoic acid, p-t-butylbenzoic acid, P-third amyl benzoic acid, phenylacetic acid, m-phenylacetic acid, p-phenylacetic acid 'dimethyl benzoic acid, ethyl benzoic acid, positive a propyl benzoic acid, an amino benzoic acid, an ethoxylated benzoic acid, or the like, which may be used alone or in combination of two or more of the above-mentioned positive birefringent compounds. The above dicarboxylic acid can be obtained by a usual method. a hot melt condensation method for the polyesterification reaction or transesterification reaction of an acid with a diol and/or a terminally blocked monocarboxylic acid or a monohydric alcohol, or a ruthenium chloride by such [S] -55-201118476 acid Any method of interfacial condensation with a diol is easily synthesized. The polyester-based additives are described in detail in the editor of Takashi Murata, "The Theory and Application of Additives" (Kyosuke Co., Ltd., the first edition of the first edition of the March 1, 2008 show). In addition, it is also possible to use the special opening No. 05- 1 55809, the special Kaiping 05-155810, the special Kaikai 5-117073, the special opening 2006-259494, the special Kaiping 07-330670, the special opening 2006-342227, and the special opening. 2007-00367 The materials described in each of the bulletins and the like. Specific examples of the above-mentioned positive birefringence compound are described below, but the positive birefringence compound which can be used in the present invention is not limited thereto. -56- 201118476 [Table 1] Dicarboxylic acid diol aromatic dicarboxylic acid aliphatic dicarboxylic acid carboxylic acid ratio (mol%) aliphatic diol terminal number average molecular weight P-1 - AA 100 ethylene glycol hydroxy 1000 P-2 — AA 100 Glycol Hydroxy 2000 P-3 — AA 100 Propylene Glycol Hydrolium 2000 P-4 — AA 100 Butanediol Hydroxy 2000 P-5 — AA 100 Hexanediol Hydroxy 2000 P-6 — AA/SA 60 /40 Glycol Hydroxy 900 P-7 — AA/SA 60/40 Ethylene Glycol Hydroxy 1500 P-8 — AA/SA 60/40 Ethylene Glycol Hydroxy 1800 P-9 — SA 100 Ethylene Glycol Hydroxy 1500 P- 10 — SA 100 Ethylene glycol hydroxy 2300 P-11 — SA 100 Ethylene glycol hydroxy 6000 P-12 — SA 100 Ethylene glycol hydroxy 1000 P-13 PA SA 50/50 Ethylene glycol hydroxy 1000 P-14 PA SA 50 /50 glycol hydroxy 1800 P-15 PA SA 50/50 glycol hydroxy 2300 P-16 PA SA/AA 40/30/30 glycol hydroxy 1000 P-17 PA SA/AA 50/20/30 B Glycol Hydroxy 1500 P-18 PA SA/AA 50/20/30 Ethylene Glycol Hydroxy 2600 P-19 TPA SA 50/50 Ethylene Glycol Hydroxy 1000 P-20 TPA SA 50/50 Ethylene Glycol Hydroxy 1200 P-21 TPA AA 50/50 glycolic hydroxyl 2100 P-22 TPA SA/AA 40/30/30 Glycol Hydroxy 1000 P-23 TPA SA/AA 50/20/30 Glycol Hydroxy 1500 P-24 TPA SA/AA 50/20/30 Ethylene Glycol Hydroxy 2100 P-25 PA/TPA AA 15/35/50 Glycol Hydroxy 1000 P-26 PA/TPA AA 20/30/50 Glycol Hydroxy 1000 P-27 PA/TPA SA/AA 15/35/20 /30 Glycol Hydroxy 1000 P-28 PA/TPA SA/AA 20/30/20/30 Glycol Hydroxy 1000 P-29 PA/TPA SA/AA 10/50/30/10 Ethylene Glycol 1000 P -30 PA/TPA SA/AA 5/45/30/20 Glycol Hydroxy 1000 P-31 — AA 100 Ethylene Glycolate Residue 1000 P-32 — AA 100 Ethylene Glycolate Residue 2000 P-33 — AA 100 Propylene Glycolate Residue 2000 P-34 — AA 100 Butanediol Ethyl Ester Residue 2000 P-35 — AA 100 Hexanediol Ethyl Ester Residue 2000 P-36 — AA/SA 60/40 Ethylene glycol acetate residue 900 -57- 201118476 [Table 2] Dicarboxylic acid diol aromatic dicarboxylic acid aliphatic dicarboxylic acid carboxylic acid ratio (mol%) Average number of aliphatic diol ends /' 7 County J Μ P-37 — AA/SA 60/40 Ethylene glycol acetate residue 1000 P-38 — AA/SA 60/40 Ethylene glycol acetate residue 2000 P-39 — SA 100 Ethylene glycol acetate residue 1000 P-40 One SA 100 Ethylene glycol acetate residue 3000 P-41 — SA 100 Ethylene glycol acetate residue 5500 P-42 — SA 100 Ethylene glycol acetate residue 1000 P-43 PA SA 50/50 Ethylene glycol acetate residue 1000 P-44 PA SA 50/50 Ethylene glycol acetate residue 1500 P-45 PA AA 50 /50 Ethylene glycol acetate residue 2000 P-46 PA SA/AA 40/30/30 Ethylene glycol acetate residue 1000 P-47 PA SA/AA 33/33/34 Ethylene glycol benzoic acid 1000 P-48 PA SA/AA 50/20/30 Ethylene glycol acetate residue 1500 P-49 PA SA/AA 50/30/20 Ethylene glycol acetate residue 2000 P-50 TPA SA 50/50 Ethylene glycol acetate residue 1000 P-51 TPA SA 50/50 Ethylene glycol acetate residue 1500 P-52 TPA SA 45/55 Ethylene glycol acetate residue 1000 P-53 TPA AA 50/ 50 Ethylene glycol acetate residue 2200 P-54 TPA SA 35/65 Ethylene glycol acetate residue 1000 P-55 TPA SA/AA 40/30/30 Ethylene glycol acetate residue 1000 P- 56 TPA SA/AA 50/20/30 Ethylene glycol acetate residue 1500 P-57 TPA SA/AA 50/30/20 Ethylene glycol acetate residue 2000 P-58 TPA SA/AA 20/20 /60 Ethylene glycol acetate residue 1000 P-59 PA/TPA AA 15/35/50 Ethylene glycol acetate residue 1000 P-60 PA/TPA AA 25/25/50 Ethylene glycol acetate residue 1000 P-61 PA/TPA SA/AA 15/35/20/30 Ethylene glycol acetate residue 1000 P-62 PA/TPA SA/AA 20/30/20/30 Ethylene glycol acetate residue 1000 P-63 PA/TPA SA/AA 10/50/30/10 Ethylene glycol acetate residue 1000 P-64 PA/TPA SA/AA 5/45/30/20 Ethylene glycol acetate residue 1000 P-65 PA/TPA SA/AA 5/45/20/30 Ethylene glycol acetate residue 1000 P-66 IPA AA/SA 20/40/40 Ethylene glycol acetate residue 1000 P-67 2,6-NPA AA/SA 20/40/40 Ethylene glycol acetate residue 1200 P-68 1,5-NPA AA/SA 20/40/40 Ethylene glycol acetate residue 1200 P-69 1,4-NPA AA/SA 20/40/40 ethylene glycol oxime residue 1200 P-70 1,8-NPA AA/SA 20/40/40 ethylene glycol oxime residue 1200 P-71 2,8-NPA AA/SA 20/40/40 Ethylene glycol acetate residue 1200 -58- 201118476 In Tables 1 and 2, PA represents phthalic acid, respectively, and TPA represents terephthalic acid, I Ρ Α denotes isophthalic acid, ΑΑ denotes adipic acid, respectively, 8 8 denotes succinic acid, 2, 61 ?6 denotes 2,6-naphthalenedicarboxylic acid, 2,8-NPA denotes 2,8-naphthalenedicarboxylic acid, respectively, and 1,5-NPA denotes 1,5-naphthalenedicarboxylic acid, 1,4-NPA, respectively Each represents 1,4-naphthalene dicarboxylic acid, and 1,8-NPA represents 1,8-naphthalene dicarboxylic acid, respectively. The amount of the above-mentioned positively birefringent compound added is preferably 1 to 30 parts by mass, more preferably 4 to 25 parts by mass, and 10 to 20 parts by mass per 100 parts by mass of the deuterated cellulose resin. Very good. The deuterated cellulose solution used in the production of the above-described deuterated cellulose-based film may have other additives in addition to the hysteresis agent. Examples of the other additives include an antioxidant, an ultraviolet absorber, a peeling accelerator, a plasticizer, and the like, and any of them can be used as well. In order to improve the mechanical properties of the obtained film or to increase the drying speed, a plasticizer may be added to the aforementioned cellulose oxide solution. The compound described in [0067] of JP-A-2008-181105 is exemplified as the above-mentioned plasticizer which can be used in the present invention. Further, as the retardation film constituting the second phase difference field, a cyclic olefin polymer film is preferably used. The raw material of the cyclic olefin-based polymer film, the method for producing the same, and the method for producing the film using the raw material are described in detail in [0098] to [0193] of JP-A-2006-293342. The invention can be referred to. In the example of the cyclic olefin-based polymer film-59-201118476 which is a retardation film in the second phase difference field, a norbornene-based polymer film is used, and a commercially available polymer can be made of ARTON ( JSR system, ZERONOR (made in Japan). Various polymer films used as the retardation film constituting the second phase difference field can be produced by various methods. For example, a solution casting method (solution casting method), a melt extrusion method, a calendering method, a compression molding method, and the like can be given. Among these film forming methods, a solution casting method (solution casting method) or a melt extrusion method is particularly preferred. Further, various polymer films which are phase difference films constituting the second phase difference field can be formed by stretching treatment after molding. The extension of the film may be a 1-axis extension or a 2-axis extension. Preferably, the two-axis extension process is performed simultaneously or sequentially. In order to achieve large optical anisotropy, the film must be stretched with a high stretch ratio. For example, it is preferred to extend in the width direction of the film and in the longitudinal direction (flow direction) of the film. The stretching ratio is preferably about 3 to 100%. The extension process can be carried out using a tenter. Alternatively, longitudinal stretching can be carried out between the rolls. A lamination casting method such as a co-casting method, a sequential casting method, or a coating method may be used as the above-described solution casting method. In the case of production by the co-casting method and the sequential casting method, first, a deuterated cellulose solution (coating liquid) for each layer is prepared. The co-casting method (multi-layer simultaneous casting) is performed on a casting support (belt or drum), and each of the layers (which may be three or more) is simultaneously extruded from another slit or the like. The coating liquid is extruded by a nozzle for casting a coating liquid. The layers are simultaneously cast, peeled off from the support at an appropriate timing, and dried to form a film casting method. In the casting method, the casting solution for the first layer is extruded and cast from the nozzle of -60-201118476, and dried or not dried, on the casting support. The coating liquid for casting of the second layer is used as a point of casting, and if necessary, it can be successively cast. The layered coating liquid is discharged to the third layer or more, and is peeled off and dried from the support at an appropriate timing. Casting method of formed film. In general, in the coating method, a film of a core layer is formed into a film by a solution film forming method, and a coating liquid applied to a surface layer is prepared, and coated on each side or both surfaces by a suitable coater, and the coating liquid is dried to form a film. A method of forming a film of a laminated structure. Further, the retardation film constituting the second phase difference region may be a layer formed by fixing the alignment state after the liquid crystal composition is formed into a desired alignment state, or may have both the layer and the polymerization supporting the layer. a laminate of a film of matter. In the latter aspect, the polymer film can also be used as a protective film for polarizers. In the example of the liquid crystal which can be used for the production of the retardation film in the second phase difference region, various liquid crystals such as a rod-like liquid crystal, a discotic liquid crystal, and a cholesteric liquid crystal are included. In order to obtain a higher front surface CR, the retardation film constituting the second phase difference region disposed on the front side preferably has a haze of 0.5 or less, preferably 0.3 or less, more preferably 0.2 or less. In order to suppress corner unevenness, it is necessary to reduce the phase difference film deformation due to the stress falling on the retardation film. The film thickness of the retardation film constituting the second phase difference region disposed on the front side is preferably 20/zm or more and 200 or less, from the viewpoint of suppressing corner unevenness and manufacturing suitability. 3. Polarized photons [S] -61 - 201118476 The polarizing sub-systems disposed on the front side and the rear side are not particularly limited. A linear polarizing film which is generally used can be used. The linear polarizing film is preferably a coating type polarizing film typified by Op tivalnc. or a polarizing film composed of a binder and iodine or a dichroic dye. The iodine and the dichroic pigment in the linear polarizing film are aligned in the binder to find polarizing properties. The iodine and the dichroic dye are preferably aligned in a single direction by being aligned along the binder molecules or by self-organizing the dichroic dye such as a liquid crystal. Commercially available polarizers are generally prepared by immersing an extended polymer in a bath in a solution of iodine or a dichroic dye, and impregnating the binder with iodine or a dichroic dye in a binder. . 4. Protective film It is preferable to apply a protective film on both sides of the front side polarizer and the rear side polarizer. However, as shown in FIG. 1, the first and second phase difference fields are composed of one film, and in the case where the film also functions as a protective film, the surface of the liquid crystal cell can be polarized. The protective film is omitted. In a state in which a protective film and one or more retardation films are disposed between the rear side polarizer and the liquid crystal cell, the protective film and one or more retardation films are provided as a laminate, and are satisfied with the first phase. The optical properties required in the field of difference. The preferred material of the protective film is the same as that of the preferred material constituting the retardation film in the first phase difference field. In the aspect in which a protective film and one or more retardation films are disposed between the front side polarizer and the liquid crystal cell, the protective film and one or more retardation films are preferably used as the laminate, and are satisfied with the second. Optical properties required in the field of phase difference. The protective film is combined with one or more retardation films-62-201118476 to improve the contrast in the oblique direction and to reduce the color shift during black display, that is, to display a certain degree of Re and Rth phase difference film. The protective film disposed on the outer side of the front side polarizer and the rear side polarizer is not particularly limited. A variety of polymer films can be used. It can be the same as the example of the retardation film constituting the first phase difference region described above. Examples thereof include deuterated cellulose (for example, a film of cellulose acetate, cellulose propionate, cellulose butyrate, etc.), polyolefin (for example, norbornene-based polymer, polypropylene), poly(methyl). A acrylate (for example, polymethyl methacrylate), a polycarbonate, a polyester, or a film mainly composed of polyfluorene, but is not limited thereto. A commercially available polymer film (in bismuth fiber) may also be used. In the case of the TD80UL (manufactured by Fujifilm Co., Ltd.), it is ARTON (JSR), ZEONOR (manufactured by Nippon Seisakusho Co., Ltd.) in terms of the decene-based polymer. Examples Hereinafter, examples will be further described to explain the present specification. The materials, reagents, masses, ratios, operations, and the like shown in the following examples can be appropriately changed without departing from the scope of the main contents of the present invention. Therefore, the scope of the present invention is not limited to Specific examples of the production of the film 1 to 6 are described in the following table: The type of sulfhydryl group and the degree of substitution of different grades of cellulose. The addition of sulfuric acid (7.8 parts by mass relative to 100 parts by mass of cellulose) Parts by mass) As a catalyst, a carboxylic acid which is a mercapto substituent raw material is added and a deuteration reaction is carried out at 40 ° C. At this time, the type and amount of the carboxylic acid are adjusted, and the type and degree of substitution of the mercapto group are adjusted. After aging, it is aged at 40 ° C. -63- 201118476 Further, the low molecular weight component of the deuterated cellulose is removed by washing with acetone. In addition, the so-called Ac system in the table means an ethyl group, and the so-called CTA system means A cellulose triacetate (a cellulose ester derivative composed of an acetate group only). (Deuterated cellulose solution) The following composition is put into a mixing tank, and the ingredients are stirred and dissolved, and then 9 After heating at 0 ° C for about 10 minutes, it was filtered with a filter paper having an average pore diameter of 34 μm and a calcined metal filter having an average pore diameter of 10 # m. Deuterated cellulose solution deuterated cellulose 1 0 0 · 0 parts by mass of triphenyl phosphate Ester (TPP) 7.8 parts by mass of biphenyldiphenyl phosphate (BDP) 3.9 parts by mass of dichloromethane 40 3.0 parts by mass of methanol 60.2 parts by mass (mater dispersion) Next, the oxime prepared in the above method is contained The following composition of the cellulose solution Into the disperser, the matting agent dispersion is prepared. -64- 201118476 Meteorite particles with an average particle diameter of 16 nm of matting agent dispersion (Aerosol R972 Japan AER Ο SIL (manufactured by A)) 2.0 parts by mass of dichloromethane 7 2.4 parts by mass Methanol 1 0.8 parts by mass of a deuterated cellulose solution 1 〇. 3 parts by mass of {additive solution) Next, the following composition containing the deuterated cellulose solution prepared in the above method is placed in a mixing tank and heated while being heated. Stirring and dissolving to prepare the additive solution. Additive solution retardation 値 performance agent (1) 2 〇. 〇 mass part of dichlorocarbyl group 58.3 parts by mass of methanol 8.7 parts by mass of bismuth cellulose solution 1 2.8 parts by mass of the above-mentioned bismuth cellulose The amount of the solution is 1 part by mass, the amount of the matting agent dispersion is 1.35 parts by mass, and the additive solution of the hysteresis 値 expression agent (1) in the deuterated cellulose-based film is 10 parts by mass. -65- 201118476 Coating solution for film. The addition ratio of the additive is the mass part when the amount of the cellulose is 100 parts by mass of the sulphated cellulose. The cotton and the additives described in the following table are changed to prepare the above-mentioned solution and dispersion. Here, the abbreviations of the additives and plasticizers described in the following tables are as follows. CTA : Triethylene fluorene cellulose TPP : Triphenyl phosphate BDP: Biphenyl diphenyl phosphate Hysteresis bismuth (1)

The above coating liquid was cast using a belt casting machine. The film peeled off from the belt using the amount of residual solvent described in the following table is stretched in the longitudinal direction by the stretching ratio described in the following table in the section which is peeled off to the tenter, and then the tenter is used, and the following The stretching ratio described in the above table extends in the width direction, and after stretching in the transverse direction, the film is shrunk (relaxed) in the width direction at a magnification described in the following table, and then the film is detached from the tenter to form a film. Deuterated cellulose film. The amount of residual solvent of the film when the tenter is off is as described in the following table. The both ends were cut before the take-up portion to take up a roll film having a width of 2000 mm and a length of 4000 m. -66- 201118476 The extension ratio is shown in the table below. With respect to the produced deuterated cellulose-based film, Re hysteresis 及 at a wavelength of 590 nm at 25 ° C and Rh hysteresis 测定 were measured. The results herein are shown in the following table. Further, the average refractive index was taken as 1.48 to calculate Rth(λ). [Table 31 Deuterated cellulose film film 1 Film 2 Film 3 Film 4 Film 5 Film 6 Cotton CTA CTA CTA CTA CTA CTA Total substitution degree 2.81 2.81 2.81 2.81 2.81 2.81 6-position substitution degree 0.320 0.320 0.320 0.320 0.320 0.320 5-position substitution Degree 0.9 0.9 0.9 0.9 0.9 0.9 Degree of substitution Ac Ac Ac Ac Ac Ac Additive additive type hysteresis 値 performance agent (1) Hysteresis 値 performance agent (1) Hysteresis 値 performance agent (1) Hysteresis 値 performance agent (1) Hysteresis 値Performance agent (1) Hysteresis 値 値 ( ( ( Plastic dosage [mass part to total 100 parts by mass] 7.8/3.9 7.8/3.9 7.8/3.9 7.8/3.9 7.8/3.9 7.8/3.9 Extension condition Longitudinal stretching ratio [%] 20 20 20 3 30 5 Lateral stretching ratio [%1 32 40 35 32 60 40 Relaxation rate [%] 7 7 7 7 7 7 Extension speed [%/min] 35 35 35 35 100 35 Film surface temperature [〇c] 120 120 120 120 160 120 Residual solvent amount when peeled off [% 】 50 50 50 50 46 55 1% residual solvent at the end of the extension) 10 10 10 10 10 12

-67-201118476 2 . The film 7 was produced in the same manner as the optical compensation layer A described in Example 2 of JP-A-2003-315556, and Re (59 0) 77 nm and Rth (590) 47 nm were obtained. Phase difference film 7. 3. Production of Film 8 A Z-TAC film (manufactured by Fujifilm Co., Ltd., Re(590) = 1 nm, Rth (590) = -lnm) was prepared. Further, the same method as that of the optical compensation layer B described in Example 2 of JP-A-2003-3 1 5556 was obtained.

Re (590} 1.5 nm, Rth (590} 207 nm retardation film 8a. The retardation film 8a is bonded to the surface of Z-TAC and used as the film 8. 4. The film 9 is produced to form a laminated film. The following composition was placed in a mixing tank, and while stirring, the components were dissolved to dissolve the deuterated cellulose solution C. <Deuterated cellulose solution C composition> Cellulose acetate 1 having a degree of substitution of 2.86 〇〇 mass part of dichloromethane (first solvent) 300 parts by mass of methanol (second solvent) 54 parts by mass of 1-butanol 11 parts by mass. The following composition was placed in another mixing tank, and while stirring, stirring The components are dissolved to prepare an additive solution D. <Additive Solution D Composition> Dichloromethane 8 parts by mass methanol 20 parts by mass -68 201118476 The following optical anisotropy reducing agent A-7 40 parts by mass optical The isotropic agent A-7 was added to 40 parts by mass of the additive solution D in 465 parts by mass of the deuterated cellulose solution C to prepare a coating liquid. The transparency of the coating solution was preferably 85% or more. Cast on the support to make thick 80/zm deuterated cellulose-based film, which is used as film 9. 5. Preparation of film 10 A stretch film (protective film A) was produced in accordance with [0223 [0226] of JP-A-2007-127893. On the surface of the protective film A, the easy-adhesion layer coating composition P-2 is prepared according to the method described in [0232] of the same publication, and the composition is in accordance with the method described in [0246] of the same publication. The film is applied to the surface of the stretched film to form an easy-adhesion layer. The film is used as the film 10. 6. Preparation of the film 1 1 A commercially available triacetone cellulose film "TF80UL" (manufactured by Fujifilm) is used as the film 1 1 7. Preparation of Films 12 to 16 (Preparation of Polymer Solution) 1) Deuterated cellulose is selected from the following deuterated celluloses A and B as described in Table 4 below. The cellulose is dried at -120 ° C and dried at -69 to 201118476, and after the water content is 0.5% by mass or less, 20 parts by mass is used. • Deuterated cellulose A: Cellulose acetate having a degree of substitution of 2.93 is used. Powder. The average degree of viscosity of deuterated cellulose A is 300, 6 The degree of substitution of acetyl group is 0.94. • Deuterated cellulose B: A powder of cellulose acetate with a degree of substitution of 2.86 is used. The average degree of viscosity of deuterated cellulose B is 300, and the degree of substitution of acetyl group at position 6 is 0.89, acetone extraction was divided into 7 mass%, mass average molecular weight / number average molecular weight ratio was 2.3, water content was 0.2 mass%, viscosity in 6% mass% dichloromethane solution was 305 mPa·s, and residual acetic acid amount was 〇. 1 quality. /. Hereinafter, the Ca content was 65 ppm, the Mg content was 26 ppm, the iron content was 0.8 ppm, the sulfate ion content was 18 ppm, the yellow index was 1.9, and the free acetic acid amount was 47 ppm. The powder had an average particle size of 1.5 mm and a standard deviation of 0.5 mm. 2} Solvent The following solvent A was used. The water content of each solvent is 0.2% by mass or less.

Solvent A Methylene chloride/methanol = 90/10 parts by mass 3) Additives Among the following additives A and B, those described in the following Table 4 were used and used.

• Additive A. Monoxide sand particles (particle size 20nm 'Mohs hardness about 7) (0.08 -70- 201118476 parts by mass)

• Additive B Triphenyl phosphate (1.6 parts by mass) Biphenyl diphenyl phosphate (〇·8 parts by mass) Antimony dioxide fine particles (particle size 20 nm, Mohs hardness: about 7) (0.08 parts by mass) 4) Dissolved and used The swelling step A described below is carried out by swelling and dissolving"

- Dissolution step A In the 400 liter stainless steel dissolution tank which has a stirring blade and has a cooling water circulation on the outer circumference, the above-mentioned solvent and additives are charged, and the above-mentioned deuterated cellulose is gradually added while stirring and dispersing. After the completion of the injection, the mixture was stirred at room temperature for 2 hours, allowed to swell for 3 hours, and then stirred again to obtain a deuterated cellulose swelling solution. In addition, the stirring type is a type of dissolver which is stirred at a peripheral speed of 15 m/Sec (shear stress 5 X 1 0 4 kgf / m / se c 2 (4.9 x 1 0 5 N / m / sec 2 )) The eccentric agitating shaft and the agitating shaft having an anchor blade at the center axis and stirring at a peripheral speed of lm/sec (shear stress 1 x 1 〇 4 kgf / m/sec 2 [9.8 >< 104 N/m/sec 2 )) The swelling system stops the high-speed stirring shaft, and the peripheral speed of the stirring shaft with the anchor wing is 〇.5m/SeC. The swelled solution is heated from the storage tank to the pipe with the casing to 50 ° C, and then 2MPa is heated to 90 ° C under pressure, and completely dissolved. Heating time is 15 minutes. At this time, the filter, cover, -71-201118476 and piping system exposed to high temperature use Hastelloy It is excellent in corrosion resistance and has a casing for circulating heat medium for heat preservation and heating. Next, the temperature is lowered to 361 to obtain a cellulose-deposited cellulose solution. 5) Filter paper with absolute filtration accuracy l〇#m for filtration (#63, manufactured by Toyo Filter Paper Co., Ltd.) The obtained deuterated cellulose solution was filtered to obtain an absolute filtration accuracy of 2.5//m gold. It was filtered in a simmering filter (FH025, manufactured by Boer Co., Ltd.) to obtain a polymer solution. (Production of Film) The film was formed by the film forming step A described below.

• Film-forming step A The pulverized stainless steel solution is heated to 30° C., and is cast by a casting nozzle (described in JP-A-11-314233) and cast to a mirror stainless steel of a belt length of 60 m set at 15 °C. Physically. The casting speed was 50 m/min and the coating width was 200 cm. The space temperature of the entire casting portion was set at 15 °C. Then, the cellulose-cellulose-based film which was cast and rotated from the end portion of the casting portion to 50 cm before the peeling was peeled off from the belt, and a dry air of 45 ° C was blown. Subsequently, it was dried at 1 l ° C for 5 minutes and further dried at 140 ° C for 10 minutes to obtain a transparent film of deuterated cellulose. (Extension) As shown in Table 4 below, the following elongation step A or B was used. Either to implement the extension step.

• Extension Step A The resulting -72-201118476 film was extended using a device having a heated zone between the two press rolls. The distance between the press rolls was adjusted so that the aspect ratio (the distance between the press rolls / the substrate inlet width) was 0.1, the substrate temperature before entering the heating zone was 25 ° C, and the heating zone was as described in Table 4 below. temperature. Further, the ratio of the speed of the conveyed feed rolls to the speed of the wound feed rolls was adjusted so as to be adjusted to the stretch ratio described in Table 4 below.

• The extending step B is carried out by holding the both ends of the obtained film by a tenter clamp, and extending in a direction orthogonal to the conveying direction in the heating zone. The heating zone was set to the temperature described in Table 4 below, and the stretching ratio calculated from the expansion ratio of the tenter was used as the magnification described in Table 4 below. Films 1 2 to 16 were produced as described above. The production conditions are summarized in Table 4 below. [Table 4] Deuterated cellulose additive Step temperature [°c] Magnification [%] Film ί _2 AAA 185 15 Film 13 AAA 185 10 Film 14 BBB 170 30 Film 1·5 BAA 200 35 Film 1_6 BBB 180 40 8. Film Preparation of 17 In the production of the film 4, the same amount was produced except that the amount of addition of the retardation agent (1) was changed to 12 parts by mass, the longitudinal stretching ratio was changed to 20%, and the lateral stretching ratio was changed to 35%. 9. Preparation of the film 18 In the production of the film 5, the amount of addition of the expression agent (1) was changed to 7.2 mass parts, and the longitudinal stretch ratio was changed to 35. /. The same production was carried out except that the lateral stretch ratio was changed to 75%. 1 0. Production of a film 19 using a solid corona treatment machine 6KVA (manufactured by PILAR) to carry out the surface of a commercially available norbornene-based polymer film "ZEONORZF14-060" (manufactured by OPTES Co., Ltd.) Corona discharge treatment. The film was used as the film 19. The thickness of the film was 60 Am. 1 1 . The film 20 was produced in the same manner as the film 18, and the commercially available cycloolefin polymer film "ARTONFLZR50" ( The surface of the JSR (manufactured by JSR) was subjected to corona discharge treatment. The film was used as the film 20. The thickness of the film was 50/zm. 1 2 · The film 2 1 was produced by using a commercially available norbornene-based polymer film. "ZEONORZF14-100j (made by OPTES) is 1.55 times in the MD direction and 1.8 times in the TD direction at a temperature of 142 °C. After the fixed end biaxial stretching, the solid corona treatment machine 6KVA (PILAR) is used. The surface was subjected to a corona discharge treatment. The film was used as the film 21. The thickness of the film was 38/zm. 13. Preparation of the film 22 was prepared to deuterate cellulose propionate ("CAP482-20" (Eastman Chemical Co., Ltd.) System); the substitution degree of acetonitrile is 0.2, the degree of substitution of propyl thiol is 2.4). 8 mass% of I, 4-phenylene-tetraphenyl phosphate was added as a plasticizer, and 0.5 mass% of IRGANOX-101(R) (manufactured by Ciba Specialty Chemicals Co., Ltd.) was used as a deterioration preventing agent (antioxidant) in the drum. The mixer was mixed for 30 minutes, and the obtained mixture was dried at a hot air temperature of 150 ° C and a dew point of -36 ° C by means of a dehumidifying hot air drying-74-201118476 machine (DMZ2). The mixture was supplied to a TECHNOVEL (manufacturing) two-axis extruder, and an AER〇SIL (AEROSIL) 200V (0.016) was added as a matting agent by a continuous feeder from an opening portion of an additive hopper provided in the middle of the extruder.矽 微粒 微粒 微粒 微粒 微粒 微粒 微粒 微粒 微粒 微粒 TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN TIN The amount of extrusion was 0.5%, and it was melt-extruded. The film thickness of the melt-extruded film was 2 2 0 // m. Further, 'the film was made at a temperature of 142 ° C toward the MD direction. 1.3 times, 2.4 times in the TD direction The film is fixed at the fixed end to form a film. The film is used as the film 22. The thickness of the film is 70 from m. 14·Production of film 23 In the production of film 1, except the following table is used. A film was produced in the same manner as in the production of the film 1 except that the cellulose hydride was used as the raw material, and the production conditions were replaced by the following table, and the film 23 was used as the film 23. Further, the abbreviations of the following additives and plasticizers are synonymous with the above. -75- 201118476 [Table 5] 醯雠维素膜膜23 Cotton CTA Total Substitution Degree 2.81 6 Degree of Substitution Degree 0.320 5 Degree of Substitution Degree 0.9 Substitution Degree Ac Additive Additive Type Hysteresis 値 Demonstrating Agent (1) / Hysteresis 値 剂(2) Addition amount [parts by mass to total 100 parts by mass] 3.2/7.7 Plasticizer plasticizer TPP/BDP Plastic dose [parts by mass to total 100 parts by mass] 7.8/3.9 Extended condition longitudinal extension ratio [%] 3 Lateral extension Magnification [%] 47 Relaxation rate [%] 7 Extension speed [o/o/min] 35 Film surface temperature [〇C] 120 Residual solvent amount when peeled off [%1 55 Residual solvent amount at the end of extension [%] 13 Late Hysteresis performance agent (2)

Co2ch3 15. Preparation of film 24 (modulation of polymer solution) 1) Polymer copolymerization of bisphenol A and 9,9-bis(4-hydroxy-3-methylphenyl)phenanthrene as a bisphenol component Things. The polymer was dried by heating to 120 ° C, and the water content was 0.5% by mass or less, and then 20 parts by mass was used. 2) Solvent -76- 201118476 The following solvent A was used. The water content of each solvent is 0.2% by mass or less.

• Solvent A dichloromethane = 1 part by mass 3) Additive The following additive A was used.

• Additive A Silica sand fine particles (particle size: 20 nm, Mohs hardness: about 7) (0.08 parts by mass) 4) Dissolution The swelling and the dissolution were carried out by the following dissolution step A.

- Dissolution step A In the 400 liter stainless steel dissolution tank having a stirring blade and having a cooling water circulation on the outer periphery, the solvent and the additive are charged, and the polymer is gradually added while stirring and dispersing. After the end of the reaction, the mixture was stirred at room temperature for 2 hours to obtain a polymer solution. 5) Filtration of the polymer solution by filtration with absolute filtration accuracy l〇#m (#63, manufactured by Toyo Filter Paper Co., Ltd.), and further metal calcination filter (FH02 5, Bohr) with absolute filtration accuracy of 2.5/zm Filtered in a company to obtain a polymer solution. (Production of Film) Film formation was carried out by the film forming step A described below.

- Film-forming step A-77-201118476 The temperature of the polymer solution was heated to 30 ° C, and it was cast through a casting nozzle (described in JP-A-11-314233) and cast to a belt length of 60 m set at 15 °C. Mirrored stainless steel support. The casting speed was 10 m/min and the coating width was 150 cm. The space temperature of the entire casting portion was set to 15. Hey. Then, 'the deuterated cellulose-based film which was cast and rotated from the end portion of the casting portion to 50 cm before being peeled off from the belt, and the air was blown at a temperature of 45 ° C. Then, at 110X: drying for 5 minutes, Further, it was dried at 140 ° C for 10 minutes to obtain a transparent polymer film. (Extension) The extension step A described below was carried out.

• Extension step A uses a device having a heating zone between two press rolls to extend the resulting film. The distance between the press rolls was adjusted so that the aspect ratio (the distance between the press rolls / the substrate inlet width) was 8, the substrate temperature before entering the heating zone was 25 ° C, and the heating zone was 210 °C. Further, a transparent polymer film having a Re/Rth = 140/72 nm was obtained by maintaining a speed ratio of the speed of the conveyed pressure feed rolls to the speed of the wound feed rolls. 16. Film 25 is prepared from 2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropane and 2,2'-bis(trifluoromethyl)-4,4 diaminobiphenyl The synthesized polyimine was dissolved in cyclohexanone to prepare a 15% by mass solution. The polyimine solution was applied onto a biaxially stretched polyester film (substrate), and dried in 12 CTC for 10 minutes to form a non-liquid crystalline polymer layer (optical compensation layer B) having a thickness of 5 μm. Laminated body. -78- 201118476 The laminate and the film 9 produced above were bonded together using an adhesive. The surface of the optical compensation layer B is brought into contact with the surface of the film 9 to be bonded. Then, the substrate is removed to form a film 25. 17. Preparation of Film 26 The following composition was placed in a mixing tank, and after each component was dissolved by superheating, the mixture was filtered using a filter paper having an average pore diameter of 34 and a calcined metal filter having an average pore diameter of 10/im to prepare a film. Deuterated cellulose solution. (Deuterated cellulose solution) Cellulose acetate with a degree of substitution of 2.81 1 part by mass of hysteresis 値 expression agent (1) Hysteresis 値 expression agent (3) Methylene chloride methanol The above-mentioned retardation 値 expression agent (3) In Table 6, EG represents 8.5 parts by mass of 7.0 parts by mass of 4 2 8.4 parts by mass and 6 parts by mass of the system is shown in Table 6 below. Further, ethylene glycol, TPA is represented by terephthalic acid, PA is represented by phthalic acid, AA is represented by adipic acid, and SA is represented by succinic acid. Further, the retardation 値 shows that the agent (3) is a non-phosphoric acid ester-based compound and has a function as a hysteresis quinone agent. The end of the aforementioned retardation 値 expression agent (3) is blocked with an ethyl hydrazine group [Table 6] Hysteresis 値 Demonstrator diol unit Dicarboxylic acid unit molecular weight Both terminal hydroxyl group blocking ratio (%) EG (%) Average carbon Number of TPA (% by mole) PA (% by mole) AA (% by mole) SA (% by mole) Average carbon number (3) 100 100 2 45 5 20 30 6 840 -79- 201118476 Quickly modulate the above The deuterated cellulose solution is cast onto a belt casting machine. Using a tenter at 140 T:, the amount of residual solvent was about 30% by mass and the film peeled off from the belt was stretched in the width direction at a stretching ratio of 16%. Then, it is transferred from a tenter to a roll conveyance, and then dried and taken up at 110 ° C to 150 ° C to produce a film 26. Further, the film had a film thickness of 85 μm. In the production of the film 26, there is no problem that occurs in the production of the film 1 (the action caused by adhesion to the manufacturing machine during the high-temperature treatment such as the drying step or the like, or adhesion to the film is not preferable. The resulting planar failure). Since it is used in the production of the film 26, the hysteresis agent (3) used as a hysteresis agent has a function as a plasticizer, so that it is not used in the production of the film 1 and is called TPP and BDP. Previous low molecular plasticizers. As described above, the above-mentioned positive birefringent compound such as the retardation 値 expression agent (3) is used, and since the above problem can be solved, the above-mentioned positive birefringent compound is preferable as a hysteresis from the viewpoint of film production.値Performance agent. 18. Production of Film 27 {Deuterated Cellulose Solution for Low Substitution Layer) The following composition was placed in a mixing tank, and while stirring, the components were stirred and dissolved to prepare a low-substitution layer for deuterated cellulose. Solution. 100 parts by mass of cellulose acetate with a degree of substitution of 2.43, hysteresis 値 expression agent (1) 4 〇 mass parts of hysteresis 値 expression agent (4) 10.0 parts by weight -80- 201118476 dichloromethane 351.5 parts by mass of methanol 52.5 parts by mass means the aforementioned retardation The composition of the quinone agent (4) is shown in Table 7 below. Further, in the following Table 7, EG is represented by ethylene glycol, PG is represented by propylene glycol, BG is represented by butylene glycol, TPA is represented by terephthalic acid, PA is represented by phthalic acid, and AA is represented by adipic acid or SA. Expressed as succinic acid. Further, the delayed 値 expression agent (4) is a non-phosphoric acid ester-based compound and has a function as a late 値 値 expression agent. The end of the hysteresis agent (4) is blocked by an ethyl group. [Table 7] Hysteresis 値 Detergent diol 1 Lowering _ Dicarboxylic acid unit molecular weight Both terminal hydroxyl blocking ratio (%) EG (%) PG (%) Average carbon number TPA (mole%} SA (Mohr %) Average carbon number (4) 100 50 50 2.5 55 45 6.2 730 (Deuterated cellulose solution for high substitution layer) The following composition is put into a mixing tank to 'stir and dissolve the ingredients to prepare a high degree of substitution. The layer is made of a deuterated cellulose solution. The cellulose acetate having a degree of substitution of 2.79 is 100.0 parts by weight. The retardation agent (4) 11.0 parts by mass of sandstone particles having an average particle diameter of 16 nm (Aerosol R972, manufactured by AER〇SIL Co., Ltd., Japan) "Mass portion of methylene chloride 395.0 parts by mass of methanol 59.0 parts by mass (production of bismuth cellulose sample) -81 - 201118476 were respectively cast to form a core layer having a film thickness of 82 μm from the low-substitution layer, from the aforementioned high The degree of substitution, the liquid forms a skin layer of 2 μm and the epidermis, which is peeled off from the belt and clamped on the clamp. In the case where the amount of residual solvent is 20%, the use is extended. The tenter extends 180% laterally in the width direction.: Lower jaw, dry at 130 °C for 20 minutes 9. The production of the film 28 In the production of the film 27, except that the core 75 // m and the stretching ratio were changed to 20%, the film was produced: 20. The film 29 was produced (the low-substituted layer was made of a cellulose-deposited solution). The following composition is put into a mixing tank, one: and the components are dissolved to prepare a low-substitution layer with a cellulose acetate retardation 値 expression agent having a degree of substitution of 2.43 (4) dichloromethane methanol (high degree of substitution) The layer is made of a deuterated cellulose solution. The following composition is put into a mixing tank and stirred to prepare a high-substitution layer for the deuterated cellulose solution. The cellulose acetate hysteresis of the 2.79 degree substitution agent (4) The 16 nm vermiculite particleized cellulose solution was dissolved in deuterated cellulose. The mass of the obtained film film was 11 80 ° C, and then the film was unloaded from the film to form a film 27. The film thickness of F The mixture was prepared in the same manner. The cellulose solution was stirred while being overheated. 100 parts by mass 1 8.5 parts by mass 365.5 parts by mass 54.6 parts by mass and dissolved in each component, 1 0 0.0 parts by mass 1 1.0 part by mass - 82 - 201118476 (aerosilR972 Japan AEROSIL (share) system) 0 .15 parts by mass of methylene chloride, 395.0 parts by mass of methanol, 59.0 parts by mass (manufacture of a bismuth cellulose sample), respectively, were cast to form a core layer having a film thickness of 37 vm from the low-degree-substituted layer with a deuterated cellulose solution, from the aforementioned high The substitution layer was formed into a skin A layer and a skin B layer having a film thickness of 2 gm using a deuterated cellulose solution. The obtained film was peeled off from the belt and clamped on the clamp, and when the amount of the residual solvent was 20% in terms of the mass of the entire film, it was dried at a temperature of 200 ° C for 30 minutes, at 130 It was dried at ° C for 20 minutes to prepare a film 29. 21. Characteristics of Films 1 to 29 The characteristics of the above films 1 to 29 are summarized in the following table. In addition, Re(590) and Rth(590) of each film were prepared by measuring 30 mm x 40 mm at 25° (3, 60% RH for 2 hours, and at KOBRA 21ADH (manufactured by Oji Scientific Instruments Co., Ltd.) at a wavelength of 590 nm). The measurement was performed on the assumption that the average refractive index of the films 1 to 6, 9, 1 and 18' 22, 23, and 26 to 29 was calculated as 1.48 and the film thickness, and the film other than the film was used as the average refractive index. Assuming 値, 1.52 for film 7 and 20, 1.60 for film 8, 1.50 for film 1 , 1.53 for film 21, 1.59 for film 24, and 1.58 for film 25. -83- 201118476 [Table 8] Film thickness (/zm) Re (590) (nm) Rth (590) (nm) Film 1 80 50 240 Film 2 80 60 250 Film 3 80 70 265 Film 4 85 55 200 Film 5 60 70 215 Film 6 60 50 120 Film 7 50 77 47 Film 8 68 1.5 207 Film 9 80 0.5 - 2.1 Film 10 30 0.8 1.5 Film 11 80 3 45 Film 12 57 15 10 Film 13 59 10 10 Film 14 62 10 30 Film 15 51 10 25 Film 16 57 15 25 Film 17 70 62 238 Film 18 58 67 223 Film 19 60 1.9 3,1 Film 20 50 1 1.8 3 film 21 38 1 60 250 film 22 70 60 250 film 23 45 75 160 film 24 80 140 72 film 25 85 4.5 178 film 26 85 60 250 film 27 86 60 250 film 28 79 61 230 film 29 41 0.5 45 22. Preparation of polarizing plate A polyvinyl alcohol (PVA) film having a thickness of 80/zm was immersed in an iodine solution of iodine at a temperature of 30 ° C for 60 seconds, followed by dyeing at a boric acid concentration of 4 masses. After immersing in a boric acid aqueous solution of a concentration of 60 seconds for a longitudinal extension of 5 times of the original length, it was dried at 50 ° C for 4 minutes - 84 to 2011 18476 minutes to obtain a polarizing film having a thickness of 20 μm. Among the films 1 to 29 shown below, the fluorinated cellulose-based film was subjected to saponification treatment as follows. After immersing each film in a 1.5 mol/liter and 55 ° C aqueous sodium hydroxide solution, water was sufficiently used. Rinse the sodium hydroxide. Then, after immersing in an aqueous solution of 0.005 mTorr/liter and 35 °C in a dilute sulfuric acid aqueous solution for 1 minute, it was immersed in water and the dilute sulfuric acid aqueous solution was sufficiently washed. Finally, the sample was sufficiently dried at 120 °C. The polarizing film was sandwiched between any two of the films 1 to 29 to form a bonded polarizing plate. The combination is shown in the following table. Further, the films 1 to 9, 11 to 18, and 22 to 29 of the deuterated cellulose-based film are bonded together using a polyvinyl alcohol-based adhesive; and the film 10 is bonded to a photo-adhesive layer by an easy-adhesion layer. The surface side; and the film 19 to 2 1 are bonded by an acrylic adhesive. Further, the films 1 to 24 and 26 to 28 are such that the in-plane retardation axis and the transmission axis of the polarizer are aligned in parallel; and the films 25 and 29 are in-plane retardation axes and polarizers. The through axes are orthogonal to each other. 23. Preparation of VA type liquid crystal display device (1) Preparation of liquid crystal cell 1 LC-42RX1W (manufactured by SHARP Co., Ltd.) was prepared as a VA type liquid crystal display cell. It is used as the liquid crystal cell 1. The AXOSCAN manufactured by AXOMETRICS Co., Ltd. and the attached software were used to measure the Δη£ι of the liquid crystal cell 1 (At the time of 59〇1, And(590) was 300 nm. (2) Preparation of the liquid crystal cell 2 (2) -1 Red pixel portion form

[S-85-201118476 <Formation of Curable Composition Layer (Coating Film)> By using a slit coating device having a slit slit of 100 μm and a coating effective width of 500 mm, the special opening 2009 In the case of the coloring photosensitive composition of the ninth embodiment, the coloring photosensitive composition of the ninth oxidized zirconia bead was further used for 30 minutes, and the slit was applied to the bead dispersion machine (manufactured by Shou Industrial Co., Ltd.). The BM forming surface side of the glass substrate (550 mm x 650 mm) formed by the black matrix (BM) on one side surface is formed to form a curable composition layer (coating film). The slit coating was used to adjust the interval between the slit and the glass substrate and the discharge amount of the coating liquid so that the film thickness after post-baking was 2.0 / zm, and the coating speed was 100 mm / sec. <Exposure' development, washing (rinsing}> Next, using a hot plate, drying the obtained curable composition layer at 80 ° C for 120 seconds (prebaking), using HITACHI exposure machine LE5565, Exposure to an adjacent gap of 180 m and 90 mJ/cm 2 (illuminance: 20 mW/cm 2 ). The exposed substrate was made up of potassium hydroxide-based developing solution CDK-1 (Fuji Film Electronic Materials Co., Ltd.) In a 1.0% developing solution (25 ° C), the shower was developed for 60 seconds, and washed with pure water. According to the above, a red pixel portion was formed on the glass substrate. The substrate was subjected to an oven at 220 ° C. After the minute baking, to obtain the glass substrate formed by the red pixel part. (2)-2 The green pixel part is formed on the glass substrate formed by the red pixel part, except for the use of the special opening-86-201118476 2009- The coloring photosensitive composition of Example 18 of the publication No. 144126 was further subjected to a dispersion treatment for 30 minutes using a bead separator of a 0.05 mmc/» oxidized cone bead (manufactured by Shou Industrial Co., Ltd.), and a red pixel. The formation of the portion also forms a green pixel portion. The substrate is in the oven 220. After 30 minutes of post-baking at C, a glass substrate formed by a red pixel portion and a green pixel portion is obtained. (2) The formation of the blue pixel portion is formed in the red pixel portion and the green pixel portion. On the glass substrate, a colored photosensitive composition of Example 19 of JP-A-2009-144126 was used, and a bead disperser (manufactured by Shou Industrial Co., Ltd.) was used. A blue pixel portion was formed in the same manner as the formation of the red pixel portion except for the 30 minute dispersion processor. The substrate was post-baked in an oven 230X for 30 minutes to obtain a color filter substrate. The OLED film is formed by sputtering a transparent electrode of ITO (Indium Tin Oxide) on the color filter substrate produced as described above. A spacer is formed on the upper portion of the upper partition (black matrix) as a front substrate. In addition, a glass substrate on which a transparent electrode for forming ITO is prepared is used as a counter substrate, and is transparent to the color filter substrate and the opposite substrate, respectively. electrode The patterning of the PVA mode is carried out, and an alignment film made of a vertical polyimine is further provided. The liquid crystal cell taken out from the liquid crystal panel "LC-37GX1W" manufactured by SHARP Co., Ltd. [S] -87- 201118476 is decomposed. The array substrate disposed on the light source side is taken out, and the surface is washed with ethanol, and then the product array substrate is bonded to the glass side of the opposite substrate using a glass oil. This is used as a rear substrate. The position of the black matrix outer frame provided around the RGB pixel group of the color filter of the front substrate is applied to the sealant of the ultraviolet curable resin by a dispenser method, and the liquid crystal for VA mode is dropped, and after bonding to the rear substrate After the UV-irradiated substrate is bonded, heat treatment is performed to cure the sealant, and the liquid crystal cell 2 is produced in this manner. Then, when A(OS) of the liquid crystal cell 2 produced by the AXOSTRI manufactured by AXOMETRICS Co., Ltd. and the attached software was measured, And(590) was 3 Ο Ο n m. (3) Method for producing liquid crystal cell 3 In the method of producing a color filter substrate, in addition to the formation of the red pixel portion, the coloring photosensitive composition of Example 17 of JP-A-2009-144126 is used. In the formation of the green pixel portion, the colored photosensitive composition of Example 18 of JP-A-2009-144126, and the coloring of Example 19 of JP-A-2009-144126 are used for the formation of the blue pixel portion. The liquid crystal cell 3 was produced in the same manner as the liquid crystal cell 2 except for the photosensitive composition. Then, using the AXOSCAN manufactured by AXOMETRICS Co., Ltd. and the attached software to measure the And (590) of the liquid crystal cell 3, And(590) is 300 nm. (4) The method of producing the liquid crystal cell 4 is in addition to the color. The on-column spacer pattern formed on the partition wall of the ITO film on the ITO film on the -88-201118476 portion uses a diameter of 16#m and an average height of 3.O/zm, and the liquid crystal cell 2 The same method is used to fabricate the liquid crystal cell 4. When AXOSCAN manufactured by AXOMETRICS Co., Ltd. and Δηΐ (590) of the liquid crystal cell 4 produced by the attached software measurement were used, Δη{1(590) was 2 4 Ο n m. (5) Method for Producing Liquid Crystal Cell 5 A glass substrate of a transparent electrode forming ITO is prepared to form a transparent columnar spacer pattern having a diameter of 16 jwm and an average height of 3.7 #m on an ITO film on a glass substrate, and is applied on a transparent electrode. The PVA mode is patterned, and an alignment film composed of a vertical polyimide is further provided as a front substrate. The rear substrate was produced in the same manner as the liquid crystal cell 2. Then, the sealant of the ultraviolet curable resin is applied to the spacer on the pillar of the front substrate, the liquid crystal for VA mode is dropped, and after bonding to the rear substrate, the bonded substrate is UV-irradiated, and then heat-treated. The sealant hardens. The liquid crystal cell 5 is produced in this manner. Then, when AXOSCAN manufactured by AXOMETRICS Co., Ltd. and the attached software were used to measure Δηΐ ΐ (590) of the liquid crystal cell 5 produced by the method, Δη€ΐ(590) was 3 Ο Ο n m. (6) Method for producing liquid crystal cell 6 (for reference example) In the method of producing a color filter substrate, the coloring sensitivity of Comparative Example 12 of JP-A-2009-144126 is used for the formation of the red pixel portion. For the formation of the green component, the coloring photosensitive composition of Comparative Example 13 of JP-A-89-201118476, 2GG9, 144, 126, and the formation of the blue pixel portion are used in the formation of the blue pixel portion. The liquid crystal cell 6 was produced in the same manner as the liquid crystal cell 2 except for the coloring photosensitive composition of Comparative Example 1 of 144126. (7) The liquid crystal cell 1 is calculated by comparing the components of the liquid crystal cell front side substrate and the rear side substrate, and the substrate disposed on the viewing side is used as the front substrate, and the array substrate disposed on the light source side is used as the rear substrate, and washed with ethanol. After the net surface, the calculation of the member CR used for the front substrate and the rear substrate is performed. A polarizing plate (HLC2-2518, manufactured by SANRITZ Co., Ltd.) is disposed on the backlight of the liquid crystal panel "LC-32GH5" manufactured by SHARP, and the front substrate or the rear substrate of the liquid crystal cells 1 to 5 described above is mounted thereon. The rotating table (SGSP-12AHY, SIGMA optical mechanism) is placed in parallel with the polarizing plate on the light source at intervals of 2 mm. At this time, the wiring of the array of the rear substrate and the black matrix of the front substrate are polarized and polarized. The polarizing plates of the plates are arranged in a uniform manner. Further, a polarizing plate (HLC2-2518, manufactured by SANRITZ Co., Ltd.) equipped with a rotating table is disposed so that the distance between the polarizing plates is 52 mm, and a measuring device (BM5A, TOPCON) is used. In the dark room, the black display in the normal direction and the brightness 白 in the white display are measured to calculate the front contrast A (white brightness/black brightness). Here, when the polarizing plate is rotated and the brightness 値 is minimized, it is displayed as black. The brightness 値 and the brightness 情形 when the polarizing plate is rotated by 90 degrees 値 as the brightness of the white display 値 Next, in the above-described form, the color filter substrate or the array substrate is removed, which is only Polarizer Display and white display brightness -90- .201118476 値, and calculate the front contrast B. In order to eliminate the influence of the front side contrast 偏 of the polarizer in the front contrast ,, calculate the component contrast by the following formula. Component comparison = 1 / (1 / Front contrast A-1 / front contrast Β) Based on the calculated component comparison, the component contrast of the front side substrate/comparison of the back side substrate is calculated and summarized in the table below. [Table 9] Liquid crystal cell type And(590) (nm) Component comparison of the front side substrate / Component of the rear side substrate vs. liquid crystal cell 1 300 3.1 Liquid crystal cell 2 300 3.5 Liquid crystal cell 3 300 3.0 Liquid crystal cell 4 240 3.5 Liquid crystal cell 5 300 114 Liquid crystal cell 6 (for reference example) 300 1.7 (7) Manufacture of a VA liquid crystal display device A VA liquid crystal display device was fabricated by bonding a polarizing plate to the outer surface of two substrates of any one of the liquid crystal cells by a combination shown in the following table. In the liquid crystal cells 1 to 4 and 6, a backlight of LC-42RX1W (manufactured by SHARP Co., Ltd.) is used as the light source of each of the liquid crystal display devices to be produced, and the liquid crystal cell is used in the liquid crystal cell. 5 medium use to send at 180Hz The BGR3 color LED was evaluated as follows. 24. Evaluation of VA liquid crystal display device The liquid crystal cell 1 was used as a VA type liquid crystal cell, and was separately combined with a polarizing plate as shown in the following table to fabricate the examples. And the display device of the liquid crystal-91-201118476 of the comparative example. (1) Measurement of the front contrast The brightness of the black display and the white display in the normal direction of the panel was measured in a dark room using a measuring device (BM5A, TOPCON). Calculate the front contrast (white brightness / black brightness). (2) Measurement of front contrast Using the measuring device (BM5A, TOPCON), the black display in the normal direction of the panel and the brightness 白 in the white display were measured in the dark room, and the front contrast {white brightness/black brightness) was calculated. At this time, the distance between the measuring instrument and the panel is set to 700 mm. Then, the front contrast is calculated based on the front contrast in the reference form and is expressed by the following equation. Positive contrast ratio = positive contrast in the embodiment / positive facing ratio in the reference form. The reference form is the liquid crystal cell 1 in the case of the comparative example 1 and the front contrast is 3060. (3) Comparison of viewing angles (comparison of oblique directions) The light leakage rate at the time of black display from the front side of the apparatus at 45 degrees in the azimuth direction and 60 degrees in the polar angle direction was measured. The smaller the ridge is, the less the light leakage in the oblique direction of 45 degrees is, indicating that the contrast of the display device is good, and the viewing angle characteristic of the liquid crystal display device can be evaluated. The inadmissibility of the following indicators means that even in the bright room, the light leakage can be recognized by the light leakage. ◎: Light leakage cannot be recognized -92- .201118476 〇: Light leakage is mild △ ·· Light leakage is medium to heavy △ χ: Large light leakage (not allowed) X : Strong light leakage (not allowed) ( 4) The color shift at the time of black display is measured in the omnidirectional angular direction at a polar angle of 60 degrees (Auvj ^ is not allowed in the following indicators. It means that even in the bright room, it is possible to recognize the change in color odor. ◎: The change in color odor is very small 〇: The change in color odor is mild △ '· The change in color odor is moderate △ x : The change in color odor (not allowed) x : There is a strong change in color odor (not allowed) ( 5) The uneven corners of the corners are caused by heat treatment of the liquid crystal display device at 50 °C, 95% RH for 120 hours, and after 20 hours of humidity adjustment at 25C and 60% RH, the backlight is turned on for black display. Evaluation of light leakage ◎ : There are no light leaks in 4 corners: Among the 4 corners, there is a faint light leak everywhere △ · ' Among the 4 corners, there are light leaks in 2~3 places (not Allowed) △x: Light leakage in 4 corners (not allowed) Clear light leakage in 4 corners (not allowed) The result is indicated below -93- 201118476 [Table 〇] Liquid crystal display device front side polarizer rear side polarizer front side contrast contrast contrast % viewing angle contrast color offset corner unevenness protective film outer protective film inside *1 protective film inside *1 protective film Outer Embodiment 1 Film 11 Film 1 Film 9 Film 11 3182 104 〇〇〇 Example 2 Film 11 Film 2 Film 9 Film 11 3258 106 ◎ ◎ Example 3 Film 11 Film 3 Film 9 Film 11 3196 104 〇〇〇 Example 4 Film 11 Film 2 Film 9 Film 9 3256 106 ◎ ◎ Example 5 Film 11 Film 2 Film 10 Film 11 3245 106 ◎ ◎ Example 6 Film 11 Film 2 Film 10 Film 10 3241 106 ◎ ◎ ◎ Example 7 Film 11 Film 2 Film 19 Film 11 3240 106 ◎ ◎ Example 8 Film 11 Film 2 Film 20 Film 11 3240 106 ◎ ◎ 〇 Example 9 Film 11 Film 22 Film 9 Film 11 3240 106 ◎ ◎ 〇 Example 10 Film 11 Film 21 Film 9 Film 11 3240 106 ◎ ◎ Example 11 Film 11 Film 17 Film 13 Film 11 3170 104 ◎ ◎ 〇 Example 12 Film 11 Film 18 Film 15 Film 11 3100 101 ◎ ◎ Example 13 Film 11 Film 26 Film 9 Film 11 3258 106 ◎ ◎ Example 141 Film 11 Film 27 Film 9 Film 11 3258 106 ◎ ◎ 〇 EXAMPLES Film 29 Film 27 Film 9 Film 29 3258 106 ◎ ◎ Example 161 Film 11 Film 27 Film 9 Film 29 3258 106 ◎ ◎ Example 17 Film 29 Film 27 Film 9 Film 11 3258 106 ◎ ◎ Example 18 film 11 film 28 film 9 film 11 3250 106 Δ Δ 〇 * 1 In the embodiment, the inner protective film of the rear polarizer corresponds to the first retardation film, and the inner protective film of the front polarizer is equivalent to the first 2 retardation film. -94- .201118476 [Table 1 l] Liquid crystal display device Front side polarizer Rear side polarizer Front side contrast Contrast contrast % View angle Contrast color offset Corner unevenness Protective film outside protective film inside *1 Protective film inside U Protective film outside comparison Example 1 Film 11 Film 9 Film 2 Film 11 2824 92 ◎ ◎ X Comparative Example 2 Film 11 Film 8 Film 7 Film η 2832 93 ◎ 〇 X Comparative Example 3 * Film 11 Film 4 Film 11 Film 11 3058 100 ◎ ◎ Δ Comparative Example 4 Film 11 Film 11 Film 4 Film 11 2875 94 ◎ Δ Δ X Comparative Example 5 Film 11 Film 6 Film 6 Film 11 2983 97 ◎ ◎ Δ X Comparative Example 6 Film 11 Film 10 Film 2 Film 11 2801 92 ◎ ◎ X Comparative Example 7 Film 11 Film 24 Film 25 Film 11 2750 90 ◎ 〇 X Comparative Example 8 Film 11 Film 17 Film 12 Film 11 3065 100 ◎ Δ Δ Comparative Example 9 Film 11 Film 18 Film 14 Film 11 3065 100 ◎ ◎ Δ Comparative Example 10 Film 11 Film 18 Film 16 Film 11 3060 100 ◎ ◎ Δ *1 In the embodiment, the inner protective film of the rear polarizer is equivalent to the first retardation film. The film 'and the inner protective film of the front side polarizing plate correspond to the second retardation film. From the above results, it is understood that the inner protective film having the rear side polarizing plate, that is, the first retardation film, the film 9, 10, 13 satisfying |Re(590}| ^ 10 nm and |Rth(590}| $ 25 nm In any of the VA type liquid crystal display devices of the embodiments of the present invention according to any one of 15.19 and 20, the front view is highly contrasted. Further, it can be understood that the color shift is in contrast between the viewing angle and the black display. On the other hand, in Comparative Example 2 in which the film 7 was used as the inner protective film of the rear polarizing plate, the film 7 satisfies the first phase difference of -95- 201118476 Thin film of the characteristics required for the film, but in addition, since there is also a retardation film (phase difference film 7a) which does not satisfy the characteristic, the front contrast reduction is understandable. In addition, in addition to Comparative Example 1 and Comparative Example 6 has the same configuration except that the rear polarizing plates of Examples 2 and 5 and the front polarizing plate are the same, but there is a problem that the first retardation film is not satisfied between the rear side polarizer and the liquid crystal cell. Thin 2, so the front contrast reduction is understandable. Embodiment 1 Although the front contrast is as ambiguous as in Example 1, the viewing angle contrast is lower compared to Example 1. It is generally considered to be due to The optical characteristics of the film 28 used in the second retardation film satisfy And(590)-70 nm ^ Rth ι (5 9 0) + R th 2 ( 5 9 0) ^ Δ nd (590) - 10 nm, but almost Lower limit 値 2 2. Evaluation of VA liquid crystal display device (characteristic of liquid crystal cell) Next, in the production of the liquid crystal display device of the second embodiment, the liquid crystal cell 2 to 5 is used instead of the liquid crystal cell 1 In the same manner as described above, the VA liquid crystal display device was produced in the same manner as described above. The evaluation results are shown in the following table. However, the front contrast calculated from the following formula is as follows. = in the positive contrast of the embodiment / in the case of the front side of the reference form, the case of the liquid crystal cell 1 is Comparative Example 1 and the front side contrast is 3 0 60, the case of the liquid crystal cell 2 is the comparative example 1 1 and the front side contrast is 3080, - 96- •201118476 LCD cell 3 The case is Comparative Example 1 2 and the front contrast is 2 8 2 0, the case of the liquid crystal cell 4 is Comparative Example 13 and the front contrast is 2480, and the case of the liquid crystal cell 5 is Comparative Example 14 and the front contrast is 3950. [Table 12] Liquid crystal display device front side polarizing plate rear side polarizing plate liquid crystal cell front side contrast front contrast % protective film outer protective film inner side *1 protective film inner side *1 protective film outer side embodiment 2 film 11 film 2 film 9 film 11 1 3258 106 Example 19 Film 11 Film 2 Film 9 Film 11 2 3285 107 Example 20 Film 11 Film 2 Film 9 Film 11 3 2900 103 Example 21 Film 11 Film 5 Film 9 Film 11 4 2640 106 Example 22 Film 11 Film 2 Film 9 Film 11 5 4330 110 Comparative Example 11 Film 11 Film 5 Film 11 Film 11 2 3080 100 Comparative Example 12 Film 11 Film 5 Film 11 Film 11 3. 2820 100 Comparative Example 13 Film 11 Film 23 Film 11 Film 11 4 2480 100 Comparative Example 14 Film 11 Film 5 Film 11 Film 11 5 3950 100 When the phase film is thin and protective, the side of the plate is light and the side is behind. And in. The film film is thinned and thinned in the phase phase*11 2 . As shown in the above table, even if the component comparison/back substrate of the front substrate of the liquid crystal cell substrate is compared, In any of the liquid crystal cells 1 to 5 of 3.0 or more, the front contrast was remarkably improved. The liquid crystal cell 5 utilized in the embodiment 22 is the same as the liquid crystal cell driven in the feed order, i.e., from the above results, it is understood that the effects of the present invention are remarkable even in the liquid crystal display device which is driven in the order of driving. A liquid crystal cell 6 was used as a reference example instead of the liquid crystal cell 1, and the VA liquid crystal display device produced in the same manner as in the second embodiment was similarly evaluated. In the VA type liquid crystal display device, the contrast improvement effect of the front side -97 - 201118476 was not obtained, and the front surface contrast was small as compared with the second and the eleventh embodiments. This reason is presumed to be because the member contrast of the front side substrate of the liquid crystal cell 6 / the member of the rear side substrate is compared to 1.7, so that the effect of the present invention is alleviated. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an example of a VA liquid crystal display device of the present invention. Fig. 2 is a schematic view for explaining the action of the present invention. [Explanation of main component symbols] The meanings of the symbols in the figure are as follows. 10 Backlight 12, 14 Polarizer 16 First retardation film (first phase difference field) 18 Second retardation film (second phase difference field) 20, 22 Outer protective film 24 Substrate LC VA type liquid crystal cell PL1 Rear side polarized light Plate PL2 front side polarizer -98-

Claims (1)

201118476 VII. Patent application scope: 1. A VA type liquid crystal display device, comprising: a front side polarizer, a rear side polarizer, a VA type liquid crystal cell disposed between the front side polarizer and the rear side polarizer, and In the first phase difference region composed of one or two or more retardation layers between the rear side polarizer and the VA type liquid crystal cell, the first phase difference domain satisfies the following formula: Ο nm ^ R e ( 5 9 0 ) ^ 10 nm, and |Rth(590)| ^ 2 5 nm where Re(A) means the in-plane hysteresis nm(nm) at the wavelength ληιη, and Rth(A) means at the wavelength Further, the retardation 値 (nm) in the thickness direction of nm. 2. The VA type liquid crystal display device of claim 1, wherein the VA type liquid crystal cell has a front substrate and a rear substrate, and a component contrast (CRf) of the front substrate is compared with a component of the rear substrate ( The ratio (CRf/CRr) of CRr) is 3 or more. 3. The VA liquid crystal display device of claim 1, wherein the second phase difference region is composed of one or two or more retardation layers between the front side polarizer and the VA type liquid crystal cell. The second phase difference domain satisfies the following formula: 3 Ο nm ^ R e (5 9 0 ) ^ 90 nm, and 1 70 nm ^ Rth (59 0) ^ 300 nm . 4. The VA type liquid crystal display device of claim 3, wherein the first and second phase difference regions satisfy the following formula: Δ nd(590)-70 ^ R th ι ( 5 9 0 ) + R th 2 ( 5 9 0 ) ^ Δηά(590)-10 wherein d is the thickness (nm) of the liquid crystal layer of the VA type liquid crystal cell, and Δη (in) is the liquid crystal layer of the VA type liquid crystal cell at the wavelength λ The refractive index is different from -99 to 201118476, and Δηο! (λ} means the product of Δη(λ) and d; Rth "A) means the hysteresis in the thickness direction of the first phase difference region of wavelength 1値(nm)' and Rth2(A) mean a hysteresis nm (nm) in the thickness direction of the second phase difference region of the wavelength; I. 5. The VA type liquid crystal display device of claim 1 of the patent scope, The first phase difference field is composed of a deuterated cellulose-based film or a deuterated cellulose-based film. 6. The VA-type liquid crystal display device according to claim 5, wherein the deuterated cellulose system is The film system contains at least one compound which lowers the hysteresis 値Rth in the thickness direction within a range satisfying the following formulas (I) and (II). (I) (Rth[A]-Rth[0])/A ^ -1.0 (II) 0.01 ^ A ^ 30 (Rth [Ap contains R% (nm) of film of A compound with reduced Rth 'Rth [ 0]: Rth (nm) of a film which does not contain a compound which lowers Rth, and A: mass (%) of the compound when the mass of the film raw material polymer is regarded as 1 。. 7. In the VA type liquid crystal display device, the bismuth cellulose-based film is contained in the bismuth cellulose having a thiol substitution degree of 2.85 to 3.00, and is contained in an amount of 0.01 to 30% by mass based on the solid content of the bismuth cellulose. At least one compound which causes an in-plane retardation 値Re and a thickness direction retardation 値Rth. 8. The VA type liquid crystal display device according to claim 5, wherein the bismuth cellulose-based film is relative to bismuth cellulose. In terms of solid content, at least one of 0.01 to 30 mass% of the film reduces the -100-.201118476 |Re(400)-Re(700)丨 and |Rth(400)-Rth(700)丨 of the film. 9. The VA type liquid crystal display device of claim 1, wherein the first phase difference region is composed of an acrylic polymer film. Or a VA type liquid crystal display device according to claim 9, wherein the first phase difference field is composed of at least one selected from a lactone ring unit, a maleic anhydride unit, and The acrylic polymer film of the acrylic polymer of the unit selected from the glutaric anhydride unit or the acrylic polymer film. The VA type liquid crystal display device of claim 3, wherein the second phase difference field is composed of a deuterated cellulose film or a deuterated cellulose film. 12. The VA liquid crystal display device of claim 3, wherein the second phase difference region is composed of a cyclic olefin polymer film or a cyclic olefin polymer film. 13. The VA type liquid crystal display device of claim 1, wherein the positive facing ratio is 1 500 or more. A VA type liquid crystal display device as claimed in claim 1, which is a backlight unit including three primary color lights which are sequentially illuminated independently, and which are driven by a field sequential driving method. S S1 -101 -